Updated on 2026/04/29

写真a

 
KAZAMA SHINGO
 
Organization
School of Science Associate Professor
Title
Associate Professor
External link

Degree

  • Ph.D ( 2014.3   The University of Tokyo )

  • Master's degree ( 2011.3   The University of Tokyo )

Research Interests

  • 光検出器

  • 極低放射能技術

  • 素粒子実験

  • 暗黒物質

  • Neutrino

  • 液体キセノン

Research Areas

  • Natural Science / Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics

Education

  • 東京大学大学院   理学系研究科   物理学専攻 (博士)

    2011.4 - 2014.3

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  • University of Tokyo

    2009.4 - 2011.3

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  • Waseda University   School of Science and Engineering

    2005.4 - 2009.3

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Research History

  • Institute of Science Tokyo   Department of Physics, School of Science   Associate Professor

    2026.4

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  • Nagoya University   Kobayashi-Maskawa Institute for the Origin of Particles and the Universe (KMI)   Associate Professor

    2021.11 - 2026.3

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    Country:Japan

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  • Nagoya University   Institute for Advanced Resear   YLC Assistant Professor

    2018.4 - 2021.10

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  • University of Zurich   Department of Physics   Postdoctoral Researcher

    2016.4 - 2018.3

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  • KEK   Postdoctoral Researcher

    2014.4 - 2016.3

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Professional Memberships

Papers

  • Measurement of the Quantum Efficiency of Electrode Materials for VUV Photons in Liquid Xenon Reviewed

    S Kazama, N Aoyama, Y Itow, M Kobayashi

    Progress of Theoretical and Experimental Physics   2025.5

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    Authorship:Lead author, Corresponding author   Publishing type:Research paper (scientific journal)   Publisher:Oxford University Press (OUP)  

    Abstract

    Light dark matter searches using ionization signals in dual-phase liquid xenon (LXe) time projection chambers (TPCs) are limited by low-energy ionization backgrounds, including those from the photoelectric effect on the electrodes. To address this, we measured the quantum efficiency (QE) of various electrode materials for vacuum ultraviolet (VUV) photons in LXe, including platinum (Pt), stainless steel (SUS304), and magnesium fluoride (MgF2)-coated aluminum (Al). Our results show that MgF2-coated Al exhibits the lowest QE among the tested materials. The QE for VUV photons with a mean wavelength of 179.5 nm was measured to be (7.2 ± 2.3) × 10−5, corresponding to a reduction in QE by a factor of 4.4 compared to SUS304, a commonly used electrode material in direct dark matter experiments with LXe. These findings suggest that employing low-QE electrodes may help mitigate photoelectric-induced backgrounds, potentially improving the sensitivity of LXe TPCs in light dark matter searches.

    DOI: 10.1093/ptep/ptaf078

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  • First Indication of Solar B-8 Neutrinos via Coherent Elastic Neutrino-Nucleus Scattering with XENONnT Reviewed

    E. Aprile, J. Aalbers, K. Abe, S. Ahmed Maouloud, L. Althueser, B. Andrieu, E. Angelino, D. Antón Martin, F. Arneodo, L. Baudis, M. Bazyk, L. Bellagamba, R. Biondi, A. Bismark, K. Boese, A. Brown, G. Bruno, R. Budnik, C. Cai, C. Capelli, J. M. R. Cardoso, A. P. Cimental Chávez, A. P. Colijn, J. Conrad, J. J. Cuenca-García, V. D’Andrea, L. C. Daniel Garcia, M. P. Decowski, A. Deisting, C. Di Donato, P. Di Gangi, S. Diglio, K. Eitel, A. Elykov, A. D. Ferella, C. Ferrari, H. Fischer, T. Flehmke, M. Flierman, W. Fulgione, C. Fuselli, P. Gaemers, R. Gaior, M. Galloway, F. Gao, S. Ghosh, R. Giacomobono, R. Glade-Beucke, L. Grandi, J. Grigat, H. Guan, M. Guida, P. Gyorgy, R. Hammann, A. Higuera, C. Hils, L. Hoetzsch, N. F. Hood, M. Iacovacci, Y. Itow, J. Jakob, F. Joerg, Y. Kaminaga, M. Kara, P. Kavrigin, S. Kazama, M. Kobayashi, D. Koke, A. Kopec, F. Kuger, H. Landsman, R. F. Lang, L. Levinson, I. Li, S. Li, S. Liang, Y.-T. Lin, S. Lindemann, M. Lindner, K. Liu, M. Liu, J. Loizeau, F. Lombardi, J. Long, J. A. M. Lopes, T. Luce, Y. Ma, C. Macolino, J. Mahlstedt, A. Mancuso, L. Manenti, F. Marignetti, T. Marrodán Undagoitia, K. Martens, J. Masbou, E. Masson, S. Mastroianni, A. Melchiorre, J. Merz, M. Messina, A. Michael, K. Miuchi, A. Molinario, S. Moriyama, K. Morå, Y. Mosbacher, M. Murra, J. Müller, K. Ni, U. Oberlack, B. Paetsch, Y. Pan, Q. Pellegrini, R. Peres, C. Peters, J. Pienaar, M. Pierre, G. Plante, T. R. Pollmann, L. Principe, J. Qi, J. Qin, D. Ramírez García, M. Rajado, R. Singh, L. Sanchez, J. M. F. dos Santos, I. Sarnoff, G. Sartorelli, J. Schreiner, P. Schulte, H. Schulze Eißing, M. Schumann, L. Scotto Lavina, M. Selvi, F. Semeria, P. Shagin, S. Shi, J. Shi, M. Silva, H. Simgen, A. Takeda, P.-L. Tan, D. Thers, F. Toschi, G. Trinchero, C. D. Tunnell, F. Tönnies, K. Valerius, S. Vecchi, S. Vetter, F. I. Villazon Solar, G. Volta, C. Weinheimer, M. Weiss, D. Wenz, C. Wittweg, V. H. S. Wu, Y. Xing, D. Xu, Z. Xu, M. Yamashita, L. Yang, J. Ye, L. Yuan, G. Zavattini, M. Zhong

    Physical Review Letters   133 ( 19 )   2024.11

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    Publishing type:Research paper (scientific journal)   Publisher:American Physical Society (APS)  

    We present the first measurement of nuclear recoils from solar B8 neutrinos via coherent elastic neutrino-nucleus scattering with the XENONnT dark matter experiment. The central detector of XENONnT is a low-background, two-phase time projection chamber with a 5.9 t sensitive liquid xenon target. A blind analysis with an exposure of 3.51  t×yr resulted in 37 observed events above 0.5 keV, with (26.4−1.3+1.4) events expected from backgrounds. The background-only hypothesis is rejected with a statistical significance of 2.73σ. The measured B8 solar neutrino flux of (4.7−2.3+3.6)×106  cm−2 s−1 is consistent with results from the Sudbury Neutrino Observatory. The measured neutrino flux-weighted CEνNS cross section on Xe of (1.1−0.5+0.8)×10−39  cm2 is consistent with the Standard Model prediction. This is the first direct measurement of nuclear recoils from solar neutrinos with a dark matter detector.

    Published by the American Physical Society 2024

    DOI: 10.1103/physrevlett.133.191002

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    Other Link: http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevLett.133.191002/fulltext

  • First Dark Matter Search with Nuclear Recoils from the XENONnT Experiment Reviewed

    E. Aprile, K. Abe, F. Agostini, S. Ahmed Maouloud, L. Althueser, B. Andrieu, E. Angelino, J. R. Angevaare, V. C. Antochi, D. Antón Martin, F. Arneodo, L. Baudis, A. L. Baxter, M. Bazyk, L. Bellagamba, R. Biondi, A. Bismark, E. J. Brookes, A. Brown, S. Bruenner, G. Bruno, R. Budnik, T. K. Bui, C. Cai, J. M. R. Cardoso, D. Cichon, A. P. Cimental Chavez, A. P. Colijn, J. Conrad, J. J. Cuenca-García, J. P. Cussonneau, V. D’Andrea, M. P. Decowski, P. Di Gangi, S. Di Pede, S. Diglio, K. Eitel, A. Elykov, S. Farrell, A. D. Ferella, C. Ferrari, H. Fischer, M. Flierman, W. Fulgione, C. Fuselli, P. Gaemers, R. Gaior, A. Gallo Rosso, M. Galloway, F. Gao, R. Glade-Beucke, L. Grandi, J. Grigat, H. Guan, M. Guida, R. Hammann, A. Higuera, C. Hils, L. Hoetzsch, N. F. Hood, J. Howlett, M. Iacovacci, Y. Itow, J. Jakob, F. Joerg, A. Joy, N. Kato, M. Kara, P. Kavrigin, S. Kazama, M. Kobayashi, G. Koltman, A. Kopec, F. Kuger, H. Landsman, R. F. Lang, L. Levinson, I. Li, S. Li, S. Liang, S. Lindemann, M. Lindner, K. Liu, J. Loizeau, F. Lombardi, J. Long, J. A. M. Lopes, Y. Ma, C. Macolino, J. Mahlstedt, A. Mancuso, L. Manenti, F. Marignetti, T. Marrodán Undagoitia, K. Martens, J. Masbou, D. Masson, E. Masson, S. Mastroianni, M. Messina, K. Miuchi, K. Mizukoshi, A. Molinario, S. Moriyama, K. Morå, Y. Mosbacher, M. Murra, J. Müller, K. Ni, U. Oberlack, B. Paetsch, J. Palacio, R. Peres, C. Peters, J. Pienaar, M. Pierre, V. Pizzella, G. Plante, J. Qi, J. Qin, D. Ramírez García, R. Singh, L. Sanchez, J. M. F. dos Santos, I. Sarnoff, G. Sartorelli, J. Schreiner, D. Schulte, P. Schulte, H. Schulze Eißing, M. Schumann, L. Scotto Lavina, M. Selvi, F. Semeria, P. Shagin, S. Shi, E. Shockley, M. Silva, H. Simgen, A. Takeda, P.-L. Tan, A. Terliuk, D. Thers, F. Toschi, G. Trinchero, C. Tunnell, F. Tönnies, K. Valerius, G. Volta, C. Weinheimer, M. Weiss, D. Wenz, C. Wittweg, T. Wolf, V. H. S. Wu, Y. Xing, D. Xu, Z. Xu, M. Yamashita, L. Yang, J. Ye, L. Yuan, G. Zavattini, M. Zhong, T. Zhu

    Physical Review Letters   131 ( 4 )   2023.7

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    Authorship:Lead author   Publishing type:Research paper (scientific journal)   Publisher:American Physical Society (APS)  

    DOI: 10.1103/physrevlett.131.041003

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    Other Link: http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevLett.131.041003/fulltext

  • Search for New Physics in Electronic Recoil Data from XENONnT Reviewed

    E. Aprile, K. Abe, F. Agostini, S. Ahmed Maouloud, L. Althueser, B. Andrieu, E. Angelino, J. R. Angevaare, V. C. Antochi, D. Antón Martin, F. Arneodo, L. Baudis, A. L. Baxter, L. Bellagamba, R. Biondi, A. Bismark, A. Brown, S. Bruenner, G. Bruno, R. Budnik, T. K. Bui, C. Cai, C. Capelli, J. M.R. Cardoso, D. Cichon, M. Clark, A. P. Colijn, J. Conrad, J. J. Cuenca-García, J. P. Cussonneau, V. D'Andrea, M. P. Decowski, P. Di Gangi, S. Di Pede, A. Di Giovanni, R. Di Stefano, S. Diglio, K. Eitel, A. Elykov, S. Farrell, A. D. Ferella, C. Ferrari, H. Fischer, W. Fulgione, P. Gaemers, R. Gaior, A. Gallo Rosso, M. Galloway, F. Gao, R. Gardner, R. Glade-Beucke, L. Grandi, J. Grigat, M. Guida, R. Hammann, A. Higuera, C. Hils, L. Hoetzsch, J. Howlett, M. Iacovacci, Y. Itow, J. Jakob, F. Joerg, A. Joy, N. Kato, M. Kara, P. Kavrigin, S. Kazama, M. Kobayashi, G. Koltman, A. Kopec, F. Kuger, H. Landsman, R. F. Lang, L. Levinson, I. Li, S. Li, S. Liang, S. Lindemann, M. Lindner, K. Liu, J. Loizeau, F. Lombardi, J. Long, J. A.M. Lopes, Y. Ma, C. Macolino, J. Mahlstedt, A. Mancuso, L. Manenti, F. Marignetti, T. Marrodán Undagoitia, K. Martens, J. Masbou, D. Masson, E. Masson, S. Mastroianni, M. Messina, K. Miuchi, K. Mizukoshi

    Physical Review Letters   129 ( 16 )   2022.10

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    Authorship:Lead author, Corresponding author   Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevLett.129.161805

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  • Characterization of new silicon photomultipliers with low dark noise at low temperature Reviewed

    K.Oazaki, S.Kazama

    Journal of Instrumentation, Volume 16, P03014, 2021   16 ( 3 )   2021.3

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1088/1748-0221/16/03/P03014

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  • Development of Dual-phase Xenon TPC with a Quartz Chamber for Direct Dark Matter Search Reviewed

    Development of Dual-phase, Xenon TPC with, a, Quartz Chamber for Direct Dark Matter Search

    Prog. Theor. Exp. Phys., ptta141 (2020)   2020 ( 11 )   2020.11

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Oxford University Press (OUP)  

    <title>Abstract</title>
    The idea of a hermetic quartz chamber in a dual-phase xenon time projection chamber (TPC) has the potential to improve the detector sensitivity for direct dark matter searches in the future. A major challenge facing TPC detectors in future dark matter experiments will be the reduction of the internal background such as $^{222}$Rn and the deterioration of the ionization signal due to electronegative impurities. The hermetic quartz chamber can isolate the TPC’s sensitive volume from external interference and is thus expected to prevent contamination caused by radioactive and electronegative impurities, which originate from the outer detector materials. At the Kamioka Observatory in Japan, we have developed a TPC with a quartz chamber that contains a ⌀$ 48 \times 58$ mm volume of liquid xenon. At this development stage, we have not aimed for perfect hermeticity of the quartz chamber. Our aim here is twofold: first, to demonstrate via the use of a calibration source that the presence of quartz materials in the TPC does not impact its operation; and second, to perform quantitative measurements of the TPC’s characteristics. We successfully measured electron drift velocities of 1.2–1.7 mm/$\mu$s in liquid xenon under electric fields ranging from 75–384 V/cm, and also observed small S2 signals produced by a single ionized electron with a light yield of 16.5 $\pm$ 0.5 PE. These results were consistent with the expected values; therefore, our demonstrations provide a proof of principle for TPCs incorporating a quartz chamber.

    DOI: 10.1093/ptep/ptaa141

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    Other Link: http://academic.oup.com/ptep/article-pdf/2020/11/113H02/34299924/ptaa141.pdf

  • Observation of Excess Electronic Recoil Events in XENON1T Reviewed

    XENON Collaboration

    Phys. Rev. D 102, 072004 (2020)   102 ( 7 )   2020.10

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    DOI: 10.1103/PhysRevD.102.072004

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  • Search for Light Dark Matter Interactions Enhanced by the Migdal Effect or Bremsstrahlung in XENON1T Reviewed

    XENON Collaboration

    Phys. Rev. Lett. 123, 241803   2019.12

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  • Dark Matter Search Results from a One Ton-Year Exposure of XENON1T, Reviewed

    XENON Collaboration

    Phys. Rev. Lett.   121 ( 111302 )   2018

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  • Search for bosonic super-WIMP interactions with the XENON100 experiment Reviewed

    XENON Collaboration

    PHYSICAL REVIEW D   96 ( 12 )   2017.12

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevD.96.122002

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  • First Dark Matter Search Results from the XENON1T Experiment Reviewed

    XENON Collaboration

    PHYSICAL REVIEW LETTERS   119 ( 18 )   2017.10

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    DOI: 10.1103/PhysRevLett.119.181301

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  • Search for charginos nearly mass degenerate with the lightest neutralino based on a disappearing-track signature in pp collisions at root(s)=8 TeV with the ATLAS detector Reviewed

    ATLAS collaboration

    PHYSICAL REVIEW D   88 ( 11 )   2013.12

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevD.88.112006

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  • Search for charginos nearly mass degenerate with the lightest neutralino based on a disappearing-track signature in pp collisions at √(s) = 8 TeV with the ATLAS detector Invited

    Shingo Kazama

    Springer theses   ( 11 )   2013

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    DOI: 10.1103/PhysRevD.88.112006

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  • Search for dark matter candidates and large extra dimensions in events with a jet and missing transverse momentum with the ATLAS detector Reviewed

    ATLAS Collaboration

    Journal of High Energy Physics   2013 ( 4 )   75   2013

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/JHEP04(2013)075

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  • Search for direct chargino production in anomaly-mediated supersymmetry breaking models based on a disappearing-track signature in pp collisions at √s=7TeV with the ATLAS detector Reviewed

    ATLAS Collaboration

    Journal of High Energy Physics   2013 ( 1 )   131   2013

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/JHEP01(2013)131

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  • XENONnT WIMP search: Signal and background modeling and statistical inference Reviewed

    E. Aprile, S. Kazama

    Phys. Rev. D 111, 103040   2025.5

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  • Search for Light Dark Matter in Low-Energy Ionization Signals from XENONnT Reviewed

    E. Aprile, J. Aalbers, K. Abe, S. Ahmed Maouloud, L. Althueser, B. Andrieu, E. Angelino, D. Antón Martin, F. Arneodo, L. Baudis, M. Bazyk, L. Bellagamba, R. Biondi, A. Bismark, K. Boese, A. Brown, G. Bruno, R. Budnik, C. Cai, C. Capelli, J. M. R. Cardoso, A. P. Cimental Chávez, A. P. Colijn, J. Conrad, J. J. Cuenca-García, V. D’Andrea, L. C. Daniel Garcia, M. P. Decowski, A. Deisting, C. Di Donato, P. Di Gangi, S. Diglio, K. Eitel, S. el Morabit, A. Elykov, A. D. Ferella, C. Ferrari, H. Fischer, T. Flehmke, M. Flierman, W. Fulgione, C. Fuselli, P. Gaemers, R. Gaior, M. Galloway, F. Gao, S. Ghosh, R. Giacomobono, R. Glade-Beucke, L. Grandi, J. Grigat, H. Guan, M. Guida, P. Gyorgy, R. Hammann, A. Higuera, C. Hils, L. Hoetzsch, N. F. Hood, M. Iacovacci, Y. Itow, J. Jakob, F. Joerg, Y. Kaminaga, M. Kara, P. Kavrigin, S. Kazama, M. Kobayashi, D. Koke, A. Kopec, H. Landsman, R. F. Lang, L. Levinson, I. Li, S. Li, S. Liang, Y.-T. Lin, S. Lindemann, M. Lindner, K. Liu, M. Liu, J. Loizeau, F. Lombardi, J. Long, J. A. M. Lopes, T. Luce, Y. Ma, C. Macolino, J. Mahlstedt, A. Mancuso, L. Manenti, F. Marignetti, T. Marrodán Undagoitia, K. Martens, J. Masbou, E. Masson, S. Mastroianni, A. Melchiorre, J. Merz, M. Messina, A. Michael, K. Miuchi, A. Molinario, S. Moriyama, K. Morå, Y. Mosbacher, M. Murra, J. Müller, K. Ni, U. Oberlack, B. Paetsch, Y. Pan, Q. Pellegrini, R. Peres, C. Peters, J. Pienaar, M. Pierre, G. Plante, T. R. Pollmann, L. Principe, J. Qi, J. Qin, D. Ramírez García, M. Rajado, R. Singh, L. Sanchez, J. M. F. dos Santos, I. Sarnoff, G. Sartorelli, J. Schreiner, P. Schulte, H. Schulze Eißing, M. Schumann, L. Scotto Lavina, M. Selvi, F. Semeria, P. Shagin, S. Shi, J. Shi, M. Silva, H. Simgen, C. Szyszka, A. Takeda, P.-L. Tan, D. Thers, F. Toschi, G. Trinchero, C. D. Tunnell, F. Tönnies, K. Valerius, S. Vecchi, S. Vetter, F. I. Villazon Solar, G. Volta, C. Weinheimer, M. Weiss, D. Wenz, C. Wittweg, V. H. S. Wu, Y. Xing, D. Xu, Z. Xu, M. Yamashita, L. Yang, J. Ye, L. Yuan, G. Zavattini, M. Zhong

    Physical Review Letters   134 ( 16 )   2025.4

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    We report on a blinded search for dark matter with single- and few-electron signals in the first science run of XENONnT relying on a novel detector response framework that is physics model dependent. We derive 90% confidence upper limits for dark matter-electron interactions. Heavy and light mediator cases are considered for the standard halo model and dark matter up-scattered in the Sun. We set stringent new limits on dark matter-electron scattering via a heavy mediator with a mass within 10–20  MeV/c2 and electron absorption of axionlike particles and dark photons for mχ below 0.03  keV/c2.

    Published by the American Physical Society 2025

    DOI: 10.1103/physrevlett.134.161004

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    Other Link: http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevLett.134.161004/fulltext

  • XENONnT analysis: Signal reconstruction, calibration, and event selection Reviewed

    E. Aprile, J. Aalbers, K. Abe, S. Ahmed Maouloud, L. Althueser, B. Andrieu, E. Angelino, J. R. Angevaare, D. Antón Martin, F. Arneodo, L. Baudis, M. Bazyk, L. Bellagamba, R. Biondi, A. Bismark, K. Boese, A. Brown, G. Bruno, R. Budnik, J. M. R. Cardoso, A. P. Cimental Chávez, A. P. Colijn, J. Conrad, J. J. Cuenca-García, V. D’Andrea, L. C. Daniel Garcia, M. P. Decowski, A. Deisting, C. Di Donato, P. Di Gangi, S. Diglio, K. Eitel, A. Elykov, A. D. Ferella, C. Ferrari, H. Fischer, T. Flehmke, M. Flierman, W. Fulgione, C. Fuselli, P. Gaemers, R. Gaior, M. Galloway, F. Gao, S. Ghosh, R. Giacomobono, R. Glade-Beucke, L. Grandi, J. Grigat, H. Guan, M. Guida, P. Gyorgy, R. Hammann, A. Higuera, C. Hils, L. Hoetzsch, N. F. Hood, M. Iacovacci, Y. Itow, J. Jakob, F. Joerg, Y. Kaminaga, M. Kara, P. Kavrigin, S. Kazama, M. Kobayashi, D. Koke, A. Kopec, F. Kuger, H. Landsman, R. F. Lang, L. Levinson, I. Li, S. Li, S. Liang, Y.-T. Lin, S. Lindemann, M. Lindner, K. Liu, J. Loizeau, F. Lombardi, J. Long, J. A. M. Lopes, T. Luce, Y. Ma, C. Macolino, J. Mahlstedt, A. Mancuso, L. Manenti, F. Marignetti, T. Marrodán Undagoitia, K. Martens, J. Masbou, E. Masson, S. Mastroianni, A. Melchiorre, J. Merz, M. Messina, A. Michael, K. Miuchi, A. Molinario, S. Moriyama, K. Morå, Y. Mosbacher, M. Murra, J. Müller, K. Ni, U. Oberlack, B. Paetsch, Y. Pan, Q. Pellegrini, R. Peres, C. Peters, J. Pienaar, M. Pierre, G. Plante, T. R. Pollmann, L. Principe, J. Qi, J. Qin, D. Ramírez García, M. Rajado, R. Singh, L. Sanchez, J. M. F. dos Santos, I. Sarnoff, G. Sartorelli, J. Schreiner, D. Schulte, P. Schulte, H. Schulze Eißing, M. Schumann, L. Scotto Lavina, M. Selvi, F. Semeria, P. Shagin, S. Shi, J. Shi, M. Silva, H. Simgen, A. Takeda, P.-L. Tan, A. Terliuk, D. Thers, F. Toschi, G. Trinchero, C. D. Tunnell, F. Tönnies, K. Valerius, S. Vecchi, S. Vetter, F. I. Villazon Solar, G. Volta, C. Weinheimer, M. Weiss, D. Wenz, C. Wittweg, V. H. S. Wu, Y. Xing, D. Xu, Z. Xu, M. Yamashita, L. Yang, J. Ye, L. Yuan, G. Zavattini, M. Zhong

    Physical Review D   111 ( 6 )   2025.3

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    The XENONnT experiment, located at the INFN Laboratori Nazionali del Gran Sasso, Italy, features a 5.9 tonne liquid xenon time projection chamber surrounded by an instrumented neutron veto, all of which is housed within a muon veto water tank. Because of extensive shielding and advanced purification to mitigate natural radioactivity, an exceptionally low background level of (15.8±1.3)  events/(tonne·year·keV) in the (1,30) keV region is reached in the inner part of the time projection chamber. XENONnT is, thus, sensitive to a wide range of rare phenomena related to dark matter and neutrino interactions, both within and beyond the Standard Model of particle physics, with a focus on the direct detection of dark matter in the form of weakly interacting massive particles. From May 2021 to December 2021, XENONnT accumulated data in rare-event search mode with a total exposure of one tonne·year. This paper provides a detailed description of the signal reconstruction methods, event selection procedure, and detector response calibration, as well as an overview of the detector performance in this time frame. This work establishes the foundational framework for the “blind analysis” methodology we are using when reporting XENONnT physics results.

    Published by the American Physical Society 2025

    DOI: 10.1103/physrevd.111.062006

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  • First Search for Light Dark Matter in the Neutrino Fog with XENONnT Reviewed

    E. Aprile, J. Aalbers, K. Abe, S. Ahmed Maouloud, L. Althueser, B. Andrieu, E. Angelino, D. Antón Martin, F. Arneodo, L. Baudis, M. Bazyk, L. Bellagamba, R. Biondi, A. Bismark, K. Boese, A. Brown, G. Bruno, R. Budnik, C. Cai, C. Capelli, J. M. R. Cardoso, A. P. Cimental Chávez, A. P. Colijn, J. Conrad, J. J. Cuenca-García, V. D’Andrea, L. C. Daniel Garcia, M. P. Decowski, A. Deisting, C. Di Donato, P. Di Gangi, S. Diglio, K. Eitel, S. el Morabit, A. Elykov, A. D. Ferella, C. Ferrari, H. Fischer, T. Flehmke, M. Flierman, W. Fulgione, C. Fuselli, P. Gaemers, R. Gaior, M. Galloway, F. Gao, S. Ghosh, R. Giacomobono, R. Glade-Beucke, L. Grandi, J. Grigat, H. Guan, M. Guida, P. Gyorgy, R. Hammann, A. Higuera, C. Hils, L. Hoetzsch, N. F. Hood, M. Iacovacci, Y. Itow, J. Jakob, F. Joerg, Y. Kaminaga, M. Kara, P. Kavrigin, S. Kazama, M. Kobayashi, D. Koke, A. Kopec, H. Landsman, R. F. Lang, L. Levinson, I. Li, S. Li, S. Liang, Y.-T. Lin, S. Lindemann, M. Lindner, K. Liu, M. Liu, J. Loizeau, F. Lombardi, J. Long, J. A. M. Lopes, T. Luce, Y. Ma, C. Macolino, J. Mahlstedt, A. Mancuso, L. Manenti, F. Marignetti, T. Marrodán Undagoitia, K. Martens, J. Masbou, E. Masson, S. Mastroianni, A. Melchiorre, J. Merz, M. Messina, A. Michael, K. Miuchi, A. Molinario, S. Moriyama, K. Morå, Y. Mosbacher, M. Murra, J. Müller, K. Ni, U. Oberlack, B. Paetsch, Y. Pan, Q. Pellegrini, R. Peres, C. Peters, J. Pienaar, M. Pierre, G. Plante, T. R. Pollmann, L. Principe, J. Qi, J. Qin, D. Ramírez García, M. Rajado, R. Singh, L. Sanchez, J. M. F. dos Santos, I. Sarnoff, G. Sartorelli, J. Schreiner, P. Schulte, H. Schulze Eißing, M. Schumann, L. Scotto Lavina, M. Selvi, F. Semeria, P. Shagin, S. Shi, J. Shi, M. Silva, H. Simgen, C. Szyszka, A. Takeda, P.-L. Tan, D. Thers, F. Toschi, G. Trinchero, C. D. Tunnell, F. Tönnies, K. Valerius, S. Vecchi, S. Vetter, F. I. Villazon Solar, G. Volta, C. Weinheimer, M. Weiss, D. Wenz, C. Wittweg, V. H. S. Wu, Y. Xing, D. Xu, Z. Xu, M. Yamashita, L. Yang, J. Ye, L. Yuan, G. Zavattini, M. Zhong

    Physical Review Letters   134 ( 11 )   2025.3

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    We search for dark matter (DM) with a mass [3,12]  GeV/c2 using an exposure of 3.51  tonne year with the XENONnT experiment. We consider spin-independent DM-nucleon interactions mediated by a heavy or light mediator, spin-dependent DM-neutron interactions, momentum-dependent DM scattering, and mirror DM. Using a lowered energy threshold compared to the previous weakly interacting massive particle search, a blind analysis of [0.5, 5.0] keV nuclear recoil events reveals no significant signal excess over the background. XENONnT excludes spin-independent DM-nucleon cross sections &gt;2.5×10−45  cm2 at 90% confidence level for 6  GeV/c2 DM. In the considered mass range, the DM sensitivity approaches the “neutrino fog,” the limitation where neutrinos produce a signal that is indistinguishable from that of light DM-xenon nucleus scattering.

    Published by the American Physical Society 2025

    DOI: 10.1103/physrevlett.134.111802

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  • The XENONnT dark matter experiment Reviewed

    E. Aprile, J. Aalbers, K. Abe, S. Ahmed Maouloud, L. Althueser, B. Andrieu, E. Angelino, J. R. Angevaare, V. C. Antochi, D. Antón Martin, F. Arneodo, M. Balata, L. Baudis, A. L. Baxter, M. Bazyk, L. Bellagamba, R. Biondi, A. Bismark, E. J. Brookes, A. Brown, S. Bruenner, G. Bruno, R. Budnik, T. K. Bui, C. Cai, J. M. R. Cardoso, F. Cassese, A. Chiarini, D. Cichon, A. P. Cimental Chavez, A. P. Colijn, J. Conrad, R. Corrieri, J. J. Cuenca-García, J. P. Cussonneau, O. Dadoun, V. D’Andrea, M. P. Decowski, B. De Fazio, P. Di Gangi, S. Diglio, J. M. Disdier, D. Douillet, K. Eitel, A. Elykov, S. Farrell, A. D. Ferella, C. Ferrari, H. Fischer, M. Flierman, S. Form, D. Front, W. Fulgione, C. Fuselli, P. Gaemers, R. Gaior, A. Gallo Rosso, M. Galloway, F. Gao, R. Gardner, N. Garroum, R. Glade-Beucke, L. Grandi, J. Grigat, H. Guan, M. Guerzoni, M. Guida, R. Hammann, A. Higuera, C. Hils, L. Hoetzsch, N. F. Hood, J. Howlett, C. Huhmann, M. Iacovacci, G. Iaquaniello, L. Iven, Y. Itow, J. Jakob, F. Joerg, A. Joy, M. Kara, P. Kavrigin, S. Kazama, M. Kobayashi, G. Koltman, A. Kopec, F. Kuger, H. Landsman, R. F. Lang, L. Levinson, I. Li, S. Li, S. Liang, S. Lindemann, M. Lindner, K. Liu, J. Loizeau, F. Lombardi, J. Long, J. A. M. Lopes, Y. Ma, C. Macolino, J. Mahlstedt, A. Mancuso, L. Manenti, F. Marignetti, T. Marrodán Undagoitia, P. Martella, K. Martens, J. Masbou, D. Masson, E. Masson, S. Mastroianni, E. Mele, M. Messina, R. Michinelli, K. Miuchi, A. Molinario, S. Moriyama, K. Morå, Y. Mosbacher, M. Murra, J. Müller, K. Ni, S. Nisi, U. Oberlack, D. Orlandi, R. Othegraven, B. Paetsch, J. Palacio, S. Parlati, P. Paschos, Q. Pellegrini, R. Peres, C. Peters, J. Pienaar, M. Pierre, G. Plante, T. R. Pollmann, J. Qi, J. Qin, D. Ramírez García, M. Rynge, J. Shi, R. Singh, L. Sanchez, J. M. F. dos Santos, I. Sarnoff, G. Sartorelli, J. Schreiner, D. Schulte, P. Schulte, H. Schulze Eißing, M. Schumann, L. Scotto Lavina, M. Selvi, F. Semeria, P. Shagin, S. Shi, E. Shockley, M. Silva, H. Simgen, J. Stephen, M. Stern, B. K. Stillwell, A. Takeda, P.-L. Tan, D. Tatananni, A. Terliuk, D. Thers, F. Toschi, G. Trinchero, C. Tunnell, F. Tönnies, K. Valerius, G. Volta, C. Weinheimer, M. Weiss, D. Wenz, J. Westermann, C. Wittweg, T. Wolf, V. H. S. Wu, Y. Xing, D. Xu, Z. Xu, M. Yamashita, L. Yang, J. Ye, L. Yuan, G. Zavattini, M. Zhong, T. Zhu

    The European Physical Journal C   84 ( 8 )   2024.8

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    Abstract

    The multi-staged XENON program at INFN Laboratori Nazionali del Gran Sasso aims to detect dark matter with two-phase liquid xenon time projection chambers of increasing size and sensitivity. The XENONnT experiment is the latest detector in the program, planned to be an upgrade of its predecessor XENON1T. It features an active target of 5.9 tonnes of cryogenic liquid xenon (8.5 tonnes total mass in cryostat). The experiment is expected to extend the sensitivity to WIMP dark matter by more than an order of magnitude compared to XENON1T, thanks to the larger active mass and the significantly reduced background, improved by novel systems such as a radon removal plant and a neutron veto. This article describes the XENONnT experiment and its sub-systems in detail and reports on the detector performance during the first science run.

    DOI: 10.1140/epjc/s10052-024-12982-5

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  • Offline tagging of radon-induced backgrounds in XENON1T and applicability to other liquid xenon time projection chambers Reviewed

    E. Aprile, J. Aalbers, K. Abe, S. Ahmed Maouloud, L. Althueser, B. Andrieu, E. Angelino, J. R. Angevaare, D. Antón Martin, F. Arneodo, L. Baudis, A. L. Baxter, M. Bazyk, L. Bellagamba, R. Biondi, A. Bismark, E. J. Brookes, A. Brown, G. Bruno, R. Budnik, T. K. Bui, J. M.R. Cardoso, A. P. Cimental Chavez, A. P. Colijn, J. Conrad, J. J. Cuenca-García, V. D'Andrea, L. C. Daniel Garcia, M. P. Decowski, C. Di Donato, P. Di Gangi, S. Diglio, K. Eitel, A. Elykov, A. D. Ferella, C. Ferrari, H. Fischer, T. Flehmke, M. Flierman, W. Fulgione, C. Fuselli, P. Gaemers, R. Gaior, M. Galloway, F. Gao, S. Ghosh, R. Glade-Beucke, L. Grandi, J. Grigat, H. Guan, M. Guida, R. Hammann, A. Higuera, C. Hils, L. Hoetzsch, N. F. Hood, M. Iacovacci, Y. Itow, J. Jakob, F. Joerg, A. Joy, Y. Kaminaga, M. Kara, P. Kavrigin, S. Kazama, M. Kobayashi, A. Kopec, F. Kuger, H. Landsman, R. F. Lang, L. Levinson, I. Li, S. Li, S. Liang, Y. T. Lin, S. Lindemann, M. Lindner, K. Liu, J. Loizeau, F. Lombardi, J. Long, J. A.M. Lopes, T. Luce, Y. Ma, C. Macolino, J. Mahlstedt, A. Mancuso, L. Manenti, F. Marignetti, T. Marrodán Undagoitia, K. Martens, J. Masbou, E. Masson, S. Mastroianni, A. Melchiorre, M. Messina, A. Michael, K. Miuchi, A. Molinario, S. Moriyama

    Physical Review D   110 ( 1 )   2024.7

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    DOI: 10.1103/PhysRevD.110.012011

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  • Effective field theory and inelastic dark matter results from XENON1T Reviewed

    E. Aprile, K. Abe, F. Agostini, S. Ahmed Maouloud, L. Althueser, B. Andrieu, E. Angelino, J. R. Angevaare, V. C. Antochi, D. Antón Martin, F. Arneodo, L. Baudis, A. L. Baxter, L. Bellagamba, R. Biondi, A. Bismark, A. Brown, S. Bruenner, G. Bruno, R. Budnik, C. Cai, C. Capelli, J. M. R. Cardoso, D. Cichon, M. Clark, A. P. Colijn, J. Conrad, J. J. Cuenca-García, J. P. Cussonneau, V. D’Andrea, M. P. Decowski, P. Di Gangi, S. Di Pede, A. Di Giovanni, R. Di Stefano, S. Diglio, K. Eitel, A. Elykov, S. Farrell, A. D. Ferella, H. Fischer, W. Fulgione, P. Gaemers, R. Gaior, A. Gallo Rosso, M. Galloway, F. Gao, R. Glade-Beucke, L. Grandi, J. Grigat, M. Guida, R. Hammann, A. Higuera, C. Hils, L. Hoetzsch, J. Howlett, M. Iacovacci, Y. Itow, J. Jakob, F. Joerg, A. Joy, N. Kato, M. Kara, P. Kavrigin, S. Kazama, M. Kobayashi, G. Koltman, A. Kopec, H. Landsman, R. F. Lang, L. Levinson, I. Li, S. Li, S. Liang, S. Lindemann, M. Lindner, K. Liu, J. Loizeau, F. Lombardi, J. Long, J. A. M. Lopes, Y. Ma, C. Macolino, J. Mahlstedt, A. Mancuso, L. Manenti, A. Manfredini, F. Marignetti, T. Marrodán Undagoitia, K. Martens, J. Masbou, D. Masson, E. Masson, S. Mastroianni, M. Messina, K. Miuchi, K. Mizukoshi, A. Molinario, S. Moriyama, K. Morå, Y. Mosbacher, M. Murra, J. Müller, K. Ni, U. Oberlack, B. Paetsch, J. Palacio, R. Peres, J. Pienaar, M. Pierre, V. Pizzella, G. Plante, J. Qi, J. Qin, D. Ramírez García, S. Reichard, A. Rocchetti, N. Rupp, L. Sanchez, J. M. F. dos Santos, I. Sarnoff, G. Sartorelli, J. Schreiner, D. Schulte, P. Schulte, H. Schulze Eißing, M. Schumann, L. Scotto Lavina, M. Selvi, F. Semeria, P. Shagin, S. Shi, E. Shockley, M. Silva, H. Simgen, A. Takeda, P.-L. Tan, A. Terliuk, D. Thers, F. Toschi, G. Trinchero, C. Tunnell, F. Tönnies, K. Valerius, G. Volta, Y. Wei, C. Weinheimer, M. Weiss, D. Wenz, C. Wittweg, T. Wolf, D. Xu, Z. Xu, M. Yamashita, L. Yang, J. Ye, L. Yuan, G. Zavattini, M. Zhong, T. Zhu

    Physical Review D   109 ( 11 )   2024.6

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    In this work, we expand on the XENON1T nuclear recoil searches to study the individual signals of dark matter interactions from operators up to dimension eight in a chiral effective field theory (ChEFT) and a model of inelastic dark matter (iDM). We analyze data from two science runs of the XENON1T detector totaling 1  t×yr exposure. For these analyses, we extended the region of interest from [4.9,40.9]  keVNR to [4.9,54.4]  keVNR to enhance our sensitivity for signals that peak at nonzero energies. We show that the data are consistent with the background-only hypothesis, with a small background overfluctuation observed peaking between 20 and 50  keVNR, resulting in a maximum local discovery significance of 1.7σ for the Vector⊗Vectorstrange ChEFT channel for a dark matter particle of 70  GeV/c2 and 1.8σ for an iDM particle of 50  GeV/c2 with a mass splitting of 100  keV/c2. For each model, we report 90% confidence level upper limits. We also report upper limits on three benchmark models of dark matter interaction using ChEFT where we investigate the effect of isospin-breaking interactions. We observe rate-driven cancellations in regions of the isospin-breaking couplings, leading to up to 6 orders of magnitude weaker upper limits with respect to the isospin-conserving case.

    Published by the American Physical Society 2024

    DOI: 10.1103/physrevd.109.112017

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  • Design and performance of the field cage for the XENONnT experiment Reviewed

    E. Aprile, K. Abe, S. Ahmed Maouloud, L. Althueser, B. Andrieu, E. Angelino, J. R. Angevaare, V. C. Antochi, D. Antón Martin, F. Arneodo, L. Baudis, A. L. Baxter, M. Bazyk, L. Bellagamba, R. Biondi, A. Bismark, E. J. Brookes, A. Brown, S. Bruenner, G. Bruno, R. Budnik, T. K. Bui, C. Cai, J. M. R. Cardoso, D. Cichon, A. P. Cimental Chávez, A. P. Colijn, J. Conrad, J. J. Cuenca-García, J. P. Cussonneau, V. D’Andrea, M. P. Decowski, P. Di Gangi, S. Diglio, K. Eitel, A. Elykov, S. Farrell, A. D. Ferella, C. Ferrari, H. Fischer, M. Flierman, W. Fulgione, C. Fuselli, P. Gaemers, R. Gaior, A. Gallo Rosso, M. Galloway, F. Gao, R. Glade-Beucke, L. Grandi, J. Grigat, H. Guan, M. Guida, R. Hammann, A. Higuera, C. Hils, L. Hoetzsch, N. F. Hood, J. Howlett, M. Iacovacci, Y. Itow, J. Jakob, F. Joerg, A. Joy, M. Kara, P. Kavrigin, S. Kazama, M. Kobayashi, G. Koltman, A. Kopec, F. Kuger, H. Landsman, R. F. Lang, L. Levinson, I. Li, S. Li, S. Liang, S. Lindemann, M. Lindner, K. Liu, J. Loizeau, F. Lombardi, J. Long, J. A. M. Lopes, Y. Ma, C. Macolino, J. Mahlstedt, A. Mancuso, L. Manenti, F. Marignetti, T. Marrodán Undagoitia, K. Martens, J. Masbou, D. Masson, E. Masson, S. Mastroianni, M. Messina, K. Miuchi, A. Molinario, S. Moriyama, K. Morå, Y. Mosbacher, M. Murra, J. Müller, K. Ni, U. Oberlack, B. Paetsch, J. Palacio, Q. Pellegrini, R. Peres, C. Peters, J. Pienaar, M. Pierre, G. Plante, T. R. Pollmann, J. Qi, J. Qin, D. Ramírez García, N. Šarčević, J. Shi, R. Singh, L. Sanchez, J. M. F. dos Santos, I. Sarnoff, G. Sartorelli, J. Schreiner, D. Schulte, P. Schulte, H. Schulze Eißing, M. Schumann, L. Scotto Lavina, M. Selvi, F. Semeria, P. Shagin, S. Shi, E. Shockley, M. Silva, H. Simgen, A. Takeda, P.-L. Tan, A. Terliuk, D. Thers, F. Toschi, G. Trinchero, C. Tunnell, F. Tönnies, K. Valerius, G. Volta, C. Weinheimer, M. Weiss, D. Wenz, C. Wittweg, T. Wolf, V. H. S. Wu, Y. Xing, D. Xu, Z. Xu, M. Yamashita, L. Yang, J. Ye, L. Yuan, G. Zavattini, M. Zhong, T. Zhu

    The European Physical Journal C   84 ( 2 )   2024.2

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    Abstract

    The precision in reconstructing events detected in a dual-phase time projection chamber depends on an homogeneous and well understood electric field within the liquid target. In the XENONnT TPC the field homogeneity is achieved through a double-array field cage, consisting of two nested arrays of field shaping rings connected by an easily accessible resistor chain. Rather than being connected to the gate electrode, the topmost field shaping ring is independently biased, adding a degree of freedom to tune the electric field during operation. Two-dimensional finite element simulations were used to optimize the field cage, as well as its operation. Simulation results were compared to $${}^{83\textrm{m } }\hbox {Kr }$$calibration data. This comparison indicates an accumulation of charge on the panels of the TPC which is constant over time, as no evolution of the reconstructed position distribution of events is observed. The simulated electric field was then used to correct the charge signal for the field dependence of the charge yield. This correction resolves the inconsistent measurement of the drift electron lifetime when using different calibrations sources and different field cage tuning voltages.

    DOI: 10.1140/epjc/s10052-023-12296-y

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  • Cosmogenic background simulations for neutrinoless double beta decay with the DARWIN observatory at various underground sites Reviewed

    M. Adrover, L. Althueser, B. Andrieu, E. Angelino, J. R. Angevaare, B. Antunovic, E. Aprile, M. Babicz, D. Bajpai, E. Barberio, L. Baudis, M. Bazyk, N. Bell, L. Bellagamba, R. Biondi, Y. Biondi, A. Bismark, C. Boehm, A. Breskin, E. J. Brookes, A. Brown, G. Bruno, R. Budnik, C. Capelli, J. M. R. Cardoso, A. Chauvin, A. P. Cimental Chavez, A. P. Colijn, J. Conrad, J. J. Cuenca-García, V. D’Andrea, M. P. Decowski, A. Deisting, P. Di Gangi, S. Diglio, M. Doerenkamp, G. Drexlin, K. Eitel, A. Elykov, R. Engel, S. Farrell, A. D. Ferella, C. Ferrari, H. Fischer, M. Flierman, W. Fulgione, P. Gaemers, R. Gaior, M. Galloway, N. Garroum, S. Ghosh, F. Girard, R. Glade-Beucke, F. Glück, L. Grandi, J. Grigat, R. Größle, H. Guan, M. Guida, R. Hammann, V. Hannen, S. Hansmann-Menzemer, N. Hargittai, T. Hasegawa, C. Hils, A. Higuera, K. Hiraoka, L. Hoetzsch, M. Iacovacci, Y. Itow, J. Jakob, F. Jörg, M. Kara, P. Kavrigin, S. Kazama, M. Keller, B. Kilminster, M. Kleifges, M. Kobayashi, A. Kopec, B. von Krosigk, F. Kuger, H. Landsman, R. F. Lang, I. Li, S. Li, S. Liang, S. Lindemann, M. Lindner, F. Lombardi, J. Loizeau, T. Luce, Y. Ma, C. Macolino, J. Mahlstedt, A. Mancuso, T. Marrodán Undagoitia, J. A. M. Lopes, F. Marignetti, K. Martens, J. Masbou, S. Mastroianni, S. Milutinovic, K. Miuchi, R. Miyata, A. Molinario, C. M. B. Monteiro, K. Morå, E. Morteau, Y. Mosbacher, J. Müller, M. Murra, J. L. Newstead, K. Ni, U. G. Oberlack, I. Ostrovskiy, B. Paetsch, M. Pandurovic, Q. Pellegrini, R. Peres, J. Pienaar, M. Pierre, M. Piotter, G. Plante, T. R. Pollmann, L. Principe, J. Qi, J. Qin, M. Rajado Silva, D. Ramírez García, A. Razeto, S. Sakamoto, L. Sanchez, P. Sanchez-Lucas, J. M. F. dos Santos, G. Sartorelli, A. Scaffidi, P. Schulte, H.-C. Schultz-Coulon, H. Schulze Eißing, M. Schumann, L. Scotto Lavina, M. Selvi, F. Semeria, P. Shagin, S. Sharma, W. Shen, M. Silva, H. Simgen, R. Singh, M. Solmaz, O. Stanley, M. Steidl, P.-L. Tan, A. Terliuk, D. Thers, T. Thümmler, F. Tönnies, F. Toschi, G. Trinchero, R. Trotta, C. Tunnell, P. Urquijo, K. Valerius, S. Vecchi, S. Vetter, G. Volta, D. Vorkapic, W. Wang, K. M. Weerman, C. Weinheimer, M. Weiss, D. Wenz, C. Wittweg, J. Wolf, T. Wolf, V. H. S. Wu, M. Wurm, Y. Xing, M. Yamashita, J. Ye, G. Zavattini, K. Zuber

    The European Physical Journal C   84 ( 1 )   2024.1

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    Abstract

    Xenon dual-phase time projections chambers (TPCs) have proven to be a successful technology in studying physical phenomena that require low-background conditions. With $$40\,\textrm{t}$$ of liquid xenon (LXe) in the TPC baseline design, DARWIN will have a high sensitivity for the detection of particle dark matter, neutrinoless double beta decay ($$0\upnu \upbeta \upbeta $$), and axion-like particles (ALPs). Although cosmic muons are a source of background that cannot be entirely eliminated, they may be greatly diminished by placing the detector deep underground. In this study, we used Monte Carlo simulations to model the cosmogenic background expected for the DARWIN observatory at four underground laboratories: Laboratori Nazionali del Gran Sasso (LNGS), Sanford Underground Research Facility (SURF), Laboratoire Souterrain de Modane (LSM) and SNOLAB. We present here the results of simulations performed to determine the production rate of $${}^{137}$$Xe, the most crucial isotope in the search for $$0\upnu \upbeta \upbeta $$ of $${}^{136}$$Xe. Additionally, we explore the contribution that other muon-induced spallation products, such as other unstable xenon isotopes and tritium, may have on the cosmogenic background.

    DOI: 10.1140/epjc/s10052-023-12298-w

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  • Search for events in XENON1T associated with gravitational waves Reviewed

    E. Aprile, K. Abe, S. Ahmed Maouloud, L. Althueser, B. Andrieu, E. Angelino, J. R. Angevaare, V. C. Antochi, D. Antón Martin, F. Arneodo, L. Baudis, A. L. Baxter, M. Bazyk, L. Bellagamba, R. Biondi, A. Bismark, E. J. Brookes, A. Brown, S. Bruenner, G. Bruno, R. Budnik, T. K. Bui, C. Cai, J. M. R. Cardoso, A. P. Cimental Chavez, A. P. Colijn, J. Conrad, J. J. Cuenca-García, V. D’Andrea, M. P. Decowski, P. Di Gangi, S. Diglio, K. Eitel, A. Elykov, S. Farrell, A. D. Ferella, C. Ferrari, H. Fischer, M. Flierman, W. Fulgione, C. Fuselli, P. Gaemers, R. Gaior, A. Gallo Rosso, M. Galloway, F. Gao, R. Glade-Beucke, L. Grandi, J. Grigat, H. Guan, M. Guida, R. Hammann, A. Higuera, C. Hils, L. Hoetzsch, N. F. Hood, J. Howlett, M. Iacovacci, Y. Itow, J. Jakob, F. Joerg, A. Joy, M. Kara, P. Kavrigin, S. Kazama, M. Kobayashi, G. Koltman, A. Kopec, F. Kuger, H. Landsman, R. F. Lang, D. G. Layos Carlos, L. Levinson, I. Li, S. Li, S. Liang, S. Lindemann, M. Lindner, K. Liu, J. Loizeau, F. Lombardi, J. Long, J. A. M. Lopes, Y. Ma, C. Macolino, J. Mahlstedt, A. Mancuso, L. Manenti, F. Marignetti, T. Marrodán Undagoitia, K. Martens, J. Masbou, D. Masson, E. Masson, S. Mastroianni, M. Messina, K. Miuchi, A. Molinario, S. Moriyama, K. Morå, Y. Mosbacher, M. Murra, J. Müller, K. Ni, U. Oberlack, B. Paetsch, J. Palacio, Q. Pellegrini, R. Peres, C. Peters, J. Pienaar, M. Pierre, G. Plante, T. R. Pollmann, J. Qi, J. Qin, D. Ramírez García, J. Shi, R. Singh, L. Sanchez, J. M. F. dos Santos, I. Sarnoff, G. Sartorelli, J. Schreiner, D. Schulte, P. Schulte, H. Schulze Eißing, M. Schumann, L. Scotto Lavina, M. Selvi, F. Semeria, P. Shagin, S. Shi, E. Shockley, M. Silva, H. Simgen, A. Takeda, P.-L. Tan, A. Terliuk, D. Thers, F. Toschi, G. Trinchero, C. Tunnell, F. Tönnies, K. Valerius, G. Volta, C. Weinheimer, M. Weiss, D. Wenz, C. Wittweg, T. Wolf, V. H. S. Wu, Y. Xing, D. Xu, Z. Xu, M. Yamashita, L. Yang, J. Ye, L. Yuan, G. Zavattini, M. Zhong, T. Zhu

    Physical Review D   108 ( 7 )   2023.10

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    DOI: 10.1103/physrevd.108.072015

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  • The triggerless data acquisition system of the XENONnT experiment

    E. Aprile, J. Aalbers, K. Abe, F. Agostini, S. Ahmed Maouloud, L. Althueser, B. Andrieu, E. Angelino, J. Angevaare, V. Antochi, D. Antón Martin, F. Arneodo, L. Baudis, A. Baxter, L. Bellagamba, R. Biondi, A. Bismark, E. Brookes, A. Brown, S. Bruenner, G. Bruno, R. Budnik, T. Bui, C. Cai, J. Cardoso, D. Cichon, A. Cimental Chavez, D. Coderre, A. Colijn, J. Conrad, J. Cuenca-García, J. Cussonneau, V. D'Andrea, M. Decowski, P. Di Gangi, S. Di Pede, S. Diglio, K. Eitel, A. Elykov, S. Farrell, A. Ferella, C. Ferrari, H. Fischer, M. Flierman, W. Fulgione, C. Fuselli, P. Gaemers, R. Gaior, A. Gallo Rosso, M. Galloway, F. Gao, R. Glade-Beucke, L. Grandi, J. Grigat, M. Guida, R. Hammann, A. Higuera, C. Hils, L. Hoetzsch, N. Hood, J. Howlett, M. Iacovacci, Y. Itow, J. Jakob, F. Joerg, A. Joy, N. Kato, M. Kara, P. Kavrigin, S. Kazama, M. Kobayashi, G. Koltman, A. Kopec, F. Kuger, H. Landsman, R. Lang, L. Levinson, I. Li, S. Li, S. Liang, S. Lindemann, M. Lindner, K. Liu, J. Loizeau, F. Lombardi, J. Long, J. Lopes, Y. Ma, C. Macolino, J. Mahlstedt, A. Mancuso, L. Manenti, F. Marignetti, T. Marrodán Undagoitia, K. Martens, J. Masbou, D. Masson, E. Masson, S. Mastroianni, M. Messina

    Journal of Instrumentation   18 ( 7 )   P07054 - P07054   2023.7

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    DOI: 10.1088/1748-0221/18/07/P07054

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  • Detector signal characterization with a Bayesian network in XENONnT

    E. Aprile, K. Abe, S. Ahmed Maouloud, L. Althueser, B. Andrieu, E. Angelino, J. R. Angevaare, V. C. Antochi, D. Antón Martin, F. Arneodo, L. Baudis, A. L. Baxter, M. Bazyk, L. Bellagamba, R. Biondi, A. Bismark, E. J. Brookes, A. Brown, S. Bruenner, G. Bruno, R. Budnik, T. K. Bui, C. Cai, J. M.R. Cardoso, D. Cichon, A. P. Cimental Chavez, A. P. Colijn, J. Conrad, J. J. Cuenca-García, J. P. Cussonneau, V. D'Andrea, M. P. Decowski, P. Di Gangi, S. Di Pede, S. Diglio, K. Eitel, A. Elykov, S. Farrell, A. D. Ferella, C. Ferrari, H. Fischer, M. Flierman, W. Fulgione, C. Fuselli, P. Gaemers, R. Gaior, A. Gallo Rosso, M. Galloway, F. Gao, R. Glade-Beucke, L. Grandi, J. Grigat, H. Guan, M. Guida, R. Hammann, A. Higuera, C. Hils, L. Hoetzsch, N. F. Hood, J. Howlett, M. Iacovacci, Y. Itow, J. Jakob, F. Joerg, A. Joy, N. Kato, M. Kara, P. Kavrigin, S. Kazama, M. Kobayashi, G. Koltman, A. Kopec, F. Kuger, H. Landsman, R. F. Lang, L. Levinson, I. Li, S. Li, S. Liang, S. Lindemann, M. Lindner, K. Liu, J. Loizeau, F. Lombardi, J. Long, J. A.M. Lopes, Y. Ma, C. MacOlino, J. Mahlstedt, A. Mancuso, L. Manenti, F. Marignetti, T. Marrodán Undagoitia, K. Martens, J. Masbou, D. Masson, E. Masson, S. Mastroianni, M. Messina, K. Miuchi

    Physical Review D   108 ( 1 )   2023.7

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    DOI: 10.1103/PhysRevD.108.012016

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  • Searching for Heavy Dark Matter near the Planck Mass with XENON1T

    E. Aprile, K. Abe, S. Ahmed Maouloud, L. Althueser, B. Andrieu, E. Angelino, J. R. Angevaare, V. C. Antochi, D. Antón Martin, F. Arneodo, L. Baudis, A. L. Baxter, M. Bazyk, L. Bellagamba, R. Biondi, A. Bismark, E. J. Brookes, A. Brown, S. Bruenner, G. Bruno, R. Budnik, T. K. Bui, C. Cai, J. M.R. Cardoso, D. Cichon, A. P. Cimental Chavez, M. Clark, A. P. Colijn, J. Conrad, J. J. Cuenca-García, J. P. Cussonneau, V. D'Andrea, M. P. Decowski, P. Di Gangi, S. Di Pede, S. Diglio, K. Eitel, A. Elykov, S. Farrell, A. D. Ferella, C. Ferrari, H. Fischer, M. Flierman, W. Fulgione, C. Fuselli, P. Gaemers, R. Gaior, A. Gallo Rosso, M. Galloway, F. Gao, R. Glade-Beucke, L. Grandi, J. Grigat, H. Guan, M. Guida, R. Hammann, A. Higuera, C. Hils, L. Hoetzsch, N. F. Hood, J. Howlett, M. Iacovacci, Y. Itow, J. Jakob, F. Joerg, A. Joy, N. Kato, M. Kara, P. Kavrigin, S. Kazama, M. Kobayashi, G. Koltman, A. Kopec, F. Kuger, H. Landsman, R. F. Lang, L. Levinson, I. Li, S. Li, S. Liang, S. Lindemann, M. Lindner, K. Liu, J. Loizeau, F. Lombardi, J. Long, J. A.M. Lopes, Y. Ma, C. Macolino, J. Mahlstedt, A. Mancuso, L. Manenti, F. Marignetti, T. Marrodán Undagoitia, K. Martens, J. Masbou, D. Masson, E. Masson, S. Mastroianni, M. Messina

    Physical Review Letters   130 ( 26 )   2023.6

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    DOI: 10.1103/PhysRevLett.130.261002

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  • Low-energy calibration of XENON1T with an internal 37 Ar source

    E. Aprile, K. Abe, F. Agostini, S. Ahmed Maouloud, M. Alfonsi, L. Althueser, B. Andrieu, E. Angelino, J. R. Angevaare, V. C. Antochi, D. Antón Martin, F. Arneodo, L. Baudis, A. L. Baxter, L. Bellagamba, R. Biondi, A. Bismark, A. Brown, S. Bruenner, G. Bruno, R. Budnik, T. K. Bui, C. Cai, C. Capelli, J. M.R. Cardoso, D. Cichon, A. P. Colijn, J. Conrad, J. J. Cuenca-García, J. P. Cussonneau, V. D’Andrea, M. P. Decowski, P. Di Gangi, S. Di Pede, S. Diglio, K. Eitel, A. Elykov, S. Farrell, A. D. Ferella, C. Ferrari, H. Fischer, W. Fulgione, P. Gaemers, R. Gaior, A. Gallo Rosso, M. Galloway, F. Gao, R. Glade-Beucke, L. Grandi, J. Grigat, M. Guida, R. Hammann, A. Higuera, C. Hils, L. Hoetzsch, J. Howlett, M. Iacovacci, Y. Itow, J. Jakob, F. Joerg, A. Joy, N. Kato, M. Kara, P. Kavrigin, S. Kazama, M. Kobayashi, G. Koltman, A. Kopec, F. Kuger, H. Landsman, R. F. Lang, L. Levinson, I. Li, S. Li, S. Liang, S. Lindemann, M. Lindner, K. Liu, J. Loizeau, F. Lombardi, J. Long, J. A.M. Lopes, Y. Ma, C. Macolino, J. Mahlstedt, A. Mancuso, L. Manenti, F. Marignetti, T. Marrodán Undagoitia, K. Martens, J. Masbou, D. Masson, E. Masson, S. Mastroianni, M. Messina, K. Miuchi, K. Mizukoshi, A. Molinario, S. Moriyama, K. Morå

    European Physical Journal C   83 ( 6 )   2023.6

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    DOI: 10.1140/epjc/s10052-023-11512-z

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  • A next-generation liquid xenon observatory for dark matter and neutrino physics

    J Aalbers, S S AbdusSalam, K Abe, V Aerne, F Agostini, S Ahmed Maouloud, D S Akerib, D Y Akimov, J Akshat, A K Al Musalhi, F Alder, S K Alsum, L Althueser, C S Amarasinghe, F D Amaro, A Ames, T J Anderson, B Andrieu, N Angelides, E Angelino, J Angevaare, V C Antochi, D Antón Martin, B Antunovic, E Aprile, H M Araújo, J E Armstrong, F Arneodo, M Arthurs, P Asadi, S Baek, X Bai, D Bajpai, A Baker, J Balajthy, S Balashov, M Balzer, A Bandyopadhyay, J Bang, E Barberio, J W Bargemann, L Baudis, D Bauer, D Baur, A Baxter, A L Baxter, M Bazyk, K Beattie, J Behrens, N F Bell, L Bellagamba, P Beltrame, M Benabderrahmane, E P Bernard, G F Bertone, P Bhattacharjee, A Bhatti, A Biekert, T P Biesiadzinski, A R Binau, R Biondi, Y Biondi, H J Birch, F Bishara, A Bismark, C Blanco, G M Blockinger, E Bodnia, C Boehm, A I Bolozdynya, P D Bolton, S Bottaro, C Bourgeois, B Boxer, P Brás, A Breskin, P A Breur, C A J Brew, J Brod, E Brookes, A Brown, E Brown, S Bruenner, G Bruno, R Budnik, T K Bui, S Burdin, S Buse, J K Busenitz, D Buttazzo, M Buuck, A Buzulutskov, R Cabrita, C Cai, D Cai, C Capelli, J M R Cardoso, M C Carmona-Benitez, M Cascella, R Catena, S Chakraborty, C Chan, S Chang, A Chauvin, A Chawla, H Chen, V Chepel, N I Chott, D Cichon, A Cimental Chavez, B Cimmino, M Clark, R T Co, A P Colijn, J Conrad, M V Converse, M Costa, A Cottle, G Cox, O Creaner, J J Cuenca Garcia, J P Cussonneau, J E Cutter, C E Dahl, V D’Andrea, A David, M P Decowski, J B Dent, F F Deppisch, L de Viveiros, P Di Gangi, A Di Giovanni, S Di Pede, J Dierle, S Diglio, J E Y Dobson, M Doerenkamp, D Douillet, G Drexlin, E Druszkiewicz, D Dunsky, K Eitel, A Elykov, T Emken, R Engel, S R Eriksen, M Fairbairn, A Fan, J J Fan, S J Farrell, S Fayer, N M Fearon, A Ferella, C Ferrari, A Fieguth, A Fieguth, S Fiorucci, H Fischer, H Flaecher, M Flierman, T Florek, R Foot, P J Fox, R Franceschini, E D Fraser, C S Frenk, S Frohlich, T Fruth, W Fulgione, C Fuselli, P Gaemers, R Gaior, R J Gaitskell, M Galloway, F Gao, I Garcia Garcia, J Genovesi, C Ghag, S Ghosh, E Gibson, W Gil, D Giovagnoli, F Girard, R Glade-Beucke, F Glück, S Gokhale, A de Gouvêa, L Gráf, L Grandi, J Grigat, B Grinstein, M G D van der Grinten, R Grössle, H Guan, M Guida, R Gumbsheimer, C B Gwilliam, C R Hall, L J Hall, R Hammann, K Han, V Hannen, S Hansmann-Menzemer, R Harata, S P Hardin, E Hardy, C A Hardy, K Harigaya, R Harnik, S J Haselschwardt, M Hernandez, S A Hertel, A Higuera, C Hils, S Hochrein, L Hoetzsch, M Hoferichter, N Hood, D Hooper, M Horn, J Howlett, D Q Huang, Y Huang, D Hunt, M Iacovacci, G Iaquaniello, R Ide, C M Ignarra, G Iloglu, Y Itow, E Jacquet, O Jahangir, J Jakob, R S James, A Jansen, W Ji, X Ji, F Joerg, J Johnson, A Joy, A C Kaboth, L Kalhor, A C Kamaha, K Kanezaki, K Kar, M Kara, N Kato, P Kavrigin, S Kazama, A W Keaveney, J Kellerer, D Khaitan, A Khazov, G Khundzakishvili, I Khurana, B Kilminster, M Kleifges, P Ko, M Kobayashi, D Kodroff, G Koltmann, A Kopec, A Kopmann, J Kopp, L Korley, V N Kornoukhov, E V Korolkova, H Kraus, L M Krauss, S Kravitz, L Kreczko, V A Kudryavtsev, F Kuger, J Kumar, B López Paredes, L LaCascio, R Laha, Q Laine, H Landsman, R F Lang, E A Leason, J Lee, D S Leonard, K T Lesko, L Levinson, C Levy, I Li, S C Li, T Li, S Liang, C S Liebenthal, J Lin, Q Lin, S Lindemann, M Lindner, A Lindote, R Linehan, W H Lippincott, X Liu, K Liu, J Liu, J Loizeau, F Lombardi, J Long, M I Lopes, E Lopez Asamar, W Lorenzon, C Lu, S Luitz, Y Ma, P A N Machado, C Macolino, T Maeda, J Mahlstedt, P A Majewski, A Manalaysay, A Mancuso, L Manenti, A Manfredini, R L Mannino, N Marangou, J March-Russell, F Marignetti, T Marrodán Undagoitia, K Martens, R Martin, I Martinez-Soler, J Masbou, D Masson, E Masson, S Mastroianni, M Mastronardi, J A Matias-Lopes, M E McCarthy, N McFadden, E McGinness, D N McKinsey, J McLaughlin, K McMichael, P Meinhardt, J Menéndez, Y Meng, M Messina, R Midha, D Milisavljevic, E H Miller, B Milosevic, S Milutinovic, S A Mitra, K Miuchi, E Mizrachi, K Mizukoshi, A Molinario, A Monte, C M B Monteiro, M E Monzani, J S Moore, K Morå, J A Morad, J D Morales Mendoza, S Moriyama, E Morrison, E Morteau, Y Mosbacher, B J Mount, J Mueller, A St J Murphy, M Murra, D Naim, S Nakamura, E Nash, N Navaieelavasani, A Naylor, C Nedlik, H N Nelson, F Neves, J L Newstead, K Ni, J A Nikoleyczik, V Niro, U G Oberlack, M Obradovic, K Odgers, C A J O’Hare, P Oikonomou, I Olcina, K Oliver-Mallory, A Oranday, J Orpwood, I Ostrovskiy, K Ozaki, B Paetsch, S Pal, J Palacio, K J Palladino, J Palmer, P Panci, M Pandurovic, A Parlati, N Parveen, S J Patton, V Pěč, Q Pellegrini, B Penning, G Pereira, R Peres, Y Perez-Gonzalez, E Perry, T Pershing, R Petrossian-Byrne, J Pienaar, A Piepke, G Pieramico, M Pierre, M Piotter, V Pizzella, G Plante, T Pollmann, D Porzio, J Qi, Y Qie, J Qin, F Quevedo, N Raj, M Rajado Silva, K Ramanathan, D Ramírez García, J Ravanis, L Redard-Jacot, D Redigolo, S Reichard, J Reichenbacher, C A Rhyne, A Richards, Q Riffard, G R C Rischbieter, A Rocchetti, S L Rosenfeld, R Rosero, N Rupp, T Rushton, S Saha, P Salucci, L Sanchez, P Sanchez-Lucas, D Santone, J M F dos Santos, I Sarnoff, G Sartorelli, A B M R Sazzad, M Scheibelhut, R W Schnee, M Schrank, J Schreiner, P Schulte, D Schulte, H Schulze Eissing, M Schumann, T Schwemberger, A Schwenk, T Schwetz, L Scotto Lavina, P R Scovell, H Sekiya, M Selvi, E Semenov, F Semeria, P Shagin, S Shaw, S Shi, E Shockley, T A Shutt, R Si-Ahmed, J J Silk, C Silva, M C Silva, H Simgen, F Šimkovic, G Sinev, R Singh, W Skulski, J Smirnov, R Smith, M Solmaz, V N Solovov, P Sorensen, J Soria, T J Sparmann, I Stancu, M Steidl, A Stevens, K Stifter, L E Strigari, D Subotic, B Suerfu, A M Suliga, T J Sumner, P Szabo, M Szydagis, A Takeda, Y Takeuchi, P-L Tan, C Taricco, W C Taylor, D J Temples, A Terliuk, P A Terman, D Thers, K Thieme, T Thümmler, D R Tiedt, M Timalsina, W H To, F Toennies, Z Tong, F Toschi, D R Tovey, J Tranter, M Trask, G C Trinchero, M Tripathi, D R Tronstad, R Trotta, Y D Tsai, C D Tunnell, W G Turner, R Ueno, P Urquijo, U Utku, A Vaitkus, K Valerius, E Vassilev, S Vecchi, V Velan, S Vetter, A C Vincent, L Vittorio, G Volta, B von Krosigk, M von Piechowski, D Vorkapic, C E M Wagner, A M Wang, B Wang, Y Wang, W Wang, J J Wang, L-T Wang, M Wang, Y Wang, J R Watson, Y Wei, C Weinheimer, E Weisman, M Weiss, D Wenz, S M West, T J Whitis, M Williams, M J Wilson, D Winkler, C Wittweg, J Wolf, T Wolf, F L H Wolfs, S Woodford, D Woodward, C J Wright, V H S Wu, P Wu, S Wüstling, M Wurm, Q Xia, X Xiang, Y Xing, J Xu, Z Xu, D Xu, M Yamashita, R Yamazaki, H Yan, L Yang, Y Yang, J Ye, M Yeh, I Young, H B Yu, T T Yu, L Yuan, G Zavattini, S Zerbo, Y Zhang, M Zhong, N Zhou, X Zhou, T Zhu, Y Zhu, Y Zhuang, J P Zopounidis, K Zuber, J Zupan

    Journal of Physics G: Nuclear and Particle Physics   50 ( 1 )   013001 - 013001   2022.12

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    The nature of dark matter and properties of neutrinos are among the most pressing issues in contemporary particle physics. The dual-phase xenon time-projection chamber is the leading technology to cover the available parameter space for weakly interacting massive particles, while featuring extensive sensitivity to many alternative dark matter candidates. These detectors can also study neutrinos through neutrinoless double-beta decay and through a variety of astrophysical sources. A next-generation xenon-based detector will therefore be a true multi-purpose observatory to significantly advance particle physics, nuclear physics, astrophysics, solar physics, and cosmology. This review article presents the science cases for such a detector.

    DOI: 10.1088/1361-6471/ac841a

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  • An approximate likelihood for nuclear recoil searches with XENON1T data

    E. Aprile, K. Abe, F. Agostini, S. Ahmed Maouloud, M. Alfonsi, L. Althueser, B. Andrieu, E. Angelino, J. R. Angevaare, V. C. Antochi, D. Antón Martin, F. Arneodo, L. Baudis, A. L. Baxter, L. Bellagamba, R. Biondi, A. Bismark, A. Brown, S. Bruenner, G. Bruno, R. Budnik, C. Capelli, J. M.R. Cardoso, D. Cichon, B. Cimmino, M. Clark, A. P. Colijn, J. Conrad, J. J. Cuenca-García, J. P. Cussonneau, V. D’Andrea, M. P. Decowski, P. Di Gangi, S. Di Pede, A. Di Giovanni, R. Di Stefano, S. Diglio, A. Elykov, S. Farrell, A. D. Ferella, H. Fischer, W. Fulgione, P. Gaemers, R. Gaior, M. Galloway, F. Gao, R. Glade-Beucke, L. Grandi, J. Grigat, A. Higuera, C. Hils, L. Hoetzsch, J. Howlett, M. Iacovacci, Y. Itow, J. Jakob, F. Joerg, A. Joy, N. Kato, P. Kavrigin, S. Kazama, M. Kobayashi, G. Koltman, A. Kopec, H. Landsman, R. F. Lang, L. Levinson, I. Li, S. Li, S. Liang, S. Lindemann, M. Lindner, K. Liu, F. Lombardi, J. Long, J. A.M. Lopes, Y. Ma, C. Macolino, J. Mahlstedt, A. Mancuso, L. Manenti, A. Manfredini, F. Marignetti, T. Marrodán Undagoitia, K. Martens, J. Masbou, D. Masson, E. Masson, S. Mastroianni, M. Messina, K. Miuchi, K. Mizukoshi, A. Molinario, S. Moriyama, K. Morå, Y. Mosbacher, M. Murra, J. Müller, K. Ni, U. Oberlack

    European Physical Journal C   82 ( 11 )   2022.11

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    DOI: 10.1140/epjc/s10052-022-10913-w

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  • Double-weak decays of Xe 124 and Xe 136 in the XENON1T and XENONnT experiments

    E. Aprile, K. Abe, F. Agostini, S. Ahmed Maouloud, M. Alfonsi, L. Althueser, B. Andrieu, E. Angelino, J. R. Angevaare, V. C. Antochi, D. Antón Martin, F. Arneodo, L. Baudis, A. L. Baxter, L. Bellagamba, R. Biondi, A. Bismark, A. Brown, S. Bruenner, G. Bruno, R. Budnik, C. Cai, C. Capelli, J. M.R. Cardoso, D. Cichon, M. Clark, A. P. Colijn, J. Conrad, J. J. Cuenca-García, J. P. Cussonneau, V. D'Andrea, M. P. Decowski, P. Di Gangi, S. Di Pede, A. Di Giovanni, R. Di Stefano, S. Diglio, K. Eitel, A. Elykov, S. Farrell, A. D. Ferella, H. Fischer, W. Fulgione, P. Gaemers, R. Gaior, A. Gallo Rosso, M. Galloway, F. Gao, R. Glade-Beucke, L. Grandi, J. Grigat, M. Guida, A. Higuera, C. Hils, L. Hoetzsch, J. Howlett, M. Iacovacci, Y. Itow, J. Jakob, F. Joerg, A. Joy, N. Kato, M. Kara, P. Kavrigin, S. Kazama, M. Kobayashi, G. Koltman, A. Kopec, H. Landsman, R. F. Lang, L. Levinson, I. Li, S. Li, S. Liang, S. Lindemann, M. Lindner, K. Liu, J. Loizeau, F. Lombardi, J. Long, J. A.M. Lopes, Y. Ma, C. Macolino, J. Mahlstedt, A. Mancuso, L. Manenti, A. Manfredini, F. Marignetti, T. Marrodán Undagoitia, K. Martens, J. Masbou, D. Masson, E. Masson, S. Mastroianni, M. Messina, K. Miuchi, K. Mizukoshi, A. Molinario, S. Moriyama, K. Morå

    Physical Review C   106 ( 2 )   2022.8

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    DOI: 10.1103/PhysRevC.106.024328

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  • Emission of single and few electrons in XENON1T and limits on light dark matter Reviewed

    E. Aprile, K. Abe, F. Agostini, S. Ahmed Maouloud, M. Alfonsi, L. Althueser, E. Angelino, J. R. Angevaare, V. C. Antochi, D. Antón Martin, F. Arneodo, L. Baudis, A. L. Baxter, L. Bellagamba, A. Bernard, R. Biondi, A. Bismark, A. Brown, S. Bruenner, G. Bruno, R. Budnik, C. Capelli, J. M. R. Cardoso, D. Cichon, B. Cimmino, M. Clark, A. P. Colijn, J. Conrad, J. J. Cuenca-García, J. P. Cussonneau, V. D’Andrea, M. P. Decowski, P. Di Gangi, S. Di Pede, A. Di Giovanni, R. Di Stefano, S. Diglio, A. Elykov, S. Farrell, A. D. Ferella, H. Fischer, W. Fulgione, P. Gaemers, R. Gaior, M. Galloway, F. Gao, R. Glade-Beucke, L. Grandi, J. Grigat, A. Higuera, C. Hils, L. Hoetzsch, J. Howlett, M. Iacovacci, Y. Itow, J. Jakob, F. Joerg, A. Joy, N. Kato, P. Kavrigin, S. Kazama, M. Kobayashi, G. Koltman, A. Kopec, H. Landsman, R. F. Lang, L. Levinson, I. Li, S. Li, S. Liang, S. Lindemann, M. Lindner, K. Liu, F. Lombardi, J. Long, J. A. M. Lopes, Y. Ma, C. Macolino, J. Mahlstedt, A. Mancuso, L. Manenti, A. Manfredini, F. Marignetti, T. Marrodán Undagoitia, K. Martens, J. Masbou, D. Masson, E. Masson, S. Mastroianni, M. Messina, K. Miuchi, K. Mizukoshi, A. Molinario, S. Moriyama, K. Morå, Y. Mosbacher, M. Murra, J. Müller, K. Ni, U. Oberlack, B. Paetsch, J. Palacio, R. Peres, J. Pienaar, M. Pierre, V. Pizzella, G. Plante, J. Qi, J. Qin, D. Ramírez García, S. Reichard, A. Rocchetti, N. Rupp, L. Sanchez, J. M. F. dos Santos, I. Sarnoff, G. Sartorelli, J. Schreiner, D. Schulte, H. Schulze Eißing, M. Schumann, L. Scotto Lavina, M. Selvi, F. Semeria, P. Shagin, S. Shi, E. Shockley, M. Silva, H. Simgen, A. Takeda, P.-L. Tan, A. Terliuk, D. Thers, F. Toschi, G. Trinchero, C. Tunnell, F. Tönnies, K. Valerius, G. Volta, Y. Wei, C. Weinheimer, M. Weiss, D. Wenz, C. Wittweg, T. Wolf, Z. Xu, M. Yamashita, L. Yang, J. Ye, L. Yuan, G. Zavattini, Y. Zhang, M. Zhong, T. Zhu, J. P. Zopounidis

    Physical Review D   106 ( 2 )   2022.7

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    DOI: 10.1103/physrevd.106.022001

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  • Material radiopurity control in the XENONnT experiment

    E. Aprile, K. Abe, F. Agostini, S. Ahmed Maouloud, M. Alfonsi, L. Althueser, E. Angelino, J. R. Angevaare, V. C. Antochi, D. Antón Martin, F. Arneodo, L. Baudis, A. L. Baxter, L. Bellagamba, R. Biondi, A. Bismark, A. Brown, S. Bruenner, G. Bruno, R. Budnik, C. Capelli, J. M.R. Cardoso, D. Cichon, B. Cimmino, M. Clark, A. P. Colijn, J. Conrad, J. J. Cuenca-García, J. P. Cussonneau, V. D’Andrea, M. P. Decowski, P. Di Gangi, S. Di Pede, A. Di Giovanni, R. Di Stefano, S. Diglio, A. Elykov, S. Farrell, A. D. Ferella, H. Fischer, W. Fulgione, P. Gaemers, R. Gaior, M. Galloway, F. Gao, R. Glade-Beucke, L. Grandi, J. Grigat, A. Higuera, C. Hils, K. Hiraide, L. Hoetzsch, J. Howlett, M. Iacovacci, Y. Itow, J. Jakob, F. Joerg, N. Kato, P. Kavrigin, S. Kazama, M. Kobayashi, G. Koltman, A. Kopec, H. Landsman, R. F. Lang, L. Levinson, I. Li, S. Liang, S. Lindemann, M. Lindner, K. Liu, F. Lombardi, J. Long, J. A.M. Lopes, Y. Ma, C. Macolino, J. Mahlstedt, A. Mancuso, L. Manenti, A. Manfredini, F. Marignetti, T. Marrodán Undagoitia, K. Martens, J. Masbou, D. Masson, E. Masson, S. Mastroianni, M. Messina, K. Miuchi, K. Mizukoshi, A. Molinario, S. Moriyama, K. Morå, Y. Mosbacher, M. Murra, K. Ni, U. Oberlack, J. Palacio, R. Peres, J. Pienaar

    European Physical Journal C   82 ( 7 )   2022.7

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    DOI: 10.1140/epjc/s10052-022-10345-6

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  • Application and modeling of an online distillation method to reduce krypton and argon in XENON1T

    E. Aprile, K. Abe, F. Agostini, S. Ahmed Maouloud, M. Alfonsi, L. Althueser, E. Angelino, J. R. Angevaare, V. C. Antochi, D. Antón Martin, F. Arneodo, L. Baudis, A. L. Baxter, L. Bellagamba, A. Bernard, R. Biondi, A. Bismark, A. Brown, S. Bruenner, G. Bruno, R. Budnik, C. Capelli, J. M.R. Cardoso, D. Cichon, B. Cimmino, M. Clark, A. P. Colijn, J. Conrad, J. J. Cuenca-García, J. P. Cussonneau, V. D'Andrea, M. P. Decowski, P. Di Gangi, S. Di Pede, A. Di Giovanni, R. Di Stefano, S. Diglio, A. Elykov, S. Farrell, A. D. Ferella, H. Fischer, S. Form, W. Fulgione, P. Gaemers, R. Gaior, M. Galloway, F. Gao, R. Glade-Beucke, L. Grandi, J. Grigat, A. Higuera, C. Hils, L. Hoetzsch, J. Howlett, C. Huhmann, M. Iacovacci, Y. Itow, J. Jakob, F. Joerg, A. Joy, N. Kato, P. Kavrigin, S. Kazama, M. Kobayashi, G. Koltman, A. Kopec, H. Landsman, R. F. Lang, L. Levinson, S. Li, I. Li, S. Liang, S. Lindemann, M. Lindner, K. Liu, F. Lombardi, J. Long, J. A.M. Lopes, Y. Ma, C. Macolino, J. Mahlstedt, A. Mancuso, L. Manenti, A. Manfredini, F. Marignetti, T. Marrodán Undagoitia, K. Martens, J. Masbou, D. Masson, E. Masson, S. Mastroianni, M. Messina, K. Miuchi, K. Mizukoshi, A. Molinario, S. Moriyama, K. Morå, Y. Mosbacher, M. Murra, J. Müller

    Progress of Theoretical and Experimental Physics   2022 ( 5 )   2022.5

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    DOI: 10.1093/ptep/ptac074

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  • 222Rn emanation measurements for the XENON1T experiment Reviewed

    XENON Collaboration

    Eur. Phys. J. C. (2021) 81:337   81 ( 4 )   2021.4

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    DOI: 10.1140/epjc/s10052-020-08777-z

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  • Search for inelastic scattering of WIMP dark matter in XENON1T Reviewed

    XENON Collaboration

    Phys. Rev. D 103, 063028 (2021)   103 ( 6 )   2021.3

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    DOI: 10.1103/PhysRevD.103.063028

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  • Search for Coherent Elastic Scattering of Solar B-8 Neutrinos in the XENON1T Dark Matter Experiment Reviewed

    XENON Collaboration

    Phys. Rev. Lett. 126, 091301 (2021)   126 ( 9 )   2021.3

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    DOI: 10.1103/PhysRevLett.126.091301

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  • Detection capability of the Migdal effect for argon and xenon nuclei with position-sensitive gaseous detector Reviewed

    K.D.Nakamura, S.Kazama

    Prog. Theor. Exp. Phys., ptta162 (2020)   2020.11

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  • Projected WIMP Sensitivity of the XENONnT Dark Matter Experiment, Reviewed

    XENON Collaboration

    JCAP 11 (2020) 031   2020 ( 11 )   2020.11

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    DOI: 10.1088/1475-7516/2020/11/031

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  • Characterization of new photo-detectors for the future dark matter experiments with liquid xenon, Reviewed

    K.Ozaki, S.Kazama

    J. Phys. Conf. Ser   1468 ( 012238 )   2020.9

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  • Energy resolution and linearity of XENON1T in the MeV energy range

    E. Aprile, J. Aalbers, F. Agostini, M. Alfonsi, L. Althueser, F. D. Amaro, V. C. Antochi, E. Angelino, J. Angevaare, F. Arneodo, D. Barge, L. Baudis, B. Bauermeister, L. Bellagamba, M. L. Benabderrahmane, T. Berger, P. A. Breur, A. Brown, E. Brown, S. Bruenner, G. Bruno, R. Budnik, C. Capelli, J. M.R. Cardoso, D. Cichon, B. Cimmino, M. Clark, D. Coderre, A. P. Colijn, J. Conrad, J. P. Cussonneau, M. P. Decowski, A. Depoian, P. Di Gangi, A. Di Giovanni, R. Di Stefano, S. Diglio, A. Elykov, G. Eurin, A. D. Ferella, W. Fulgione, P. Gaemers, R. Gaior, A. Gallo Rosso, M. Galloway, F. Gao, M. Garbini, L. Grandi, C. Hasterok, C. Hils, K. Hiraide, L. Hoetzsch, E. Hogenbirk, J. Howlett, M. Iacovacci, Y. Itow, F. Joerg, N. Kato, S. Kazama, M. Kobayashi, G. Koltman, A. Kopec, H. Landsman, R. F. Lang, L. Levinson, Q. Lin, S. Lindemann, M. Lindner, F. Lombardi, J. A.M. Lopes, E. López Fune, C. Macolino, J. Mahlstedt, L. Manenti, A. Manfredini, F. Marignetti, T. Marrodán Undagoitia, K. Martens, J. Masbou, D. Masson, S. Mastroianni, M. Messina, K. Miuchi, A. Molinario, K. Morå, S. Moriyama, Y. Mosbacher, M. Murra, J. Naganoma, K. Ni, U. Oberlack, K. Odgers, J. Palacio, B. Pelssers, R. Peres, J. Pienaar, V. Pizzella, G. Plante, J. Qin, H. Qiu

    European Physical Journal C   80 ( 8 )   2020.8

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    DOI: 10.1140/epjc/s10052-020-8284-0

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  • Light Dark Matter Search with Ionization Signals in XENON1T, Reviewed

    XENON Collaboration

    Phys. Rev. Lett. 123, 251801   2019.12

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  • XENON1T Dark Matter Data Analysis: Signal Reconstruction, Calibration and Event Selection Reviewed

    XENON Collaboration

    Phys. Rev. D 100, 052014 (2019)   2019.9

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  • The XENON1T Data Acquisition System Reviewed

    XENON Collaboration

    JINST 14 (2019) no.07, P07016   2019.7

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  • XENON1T Dark Matter Data Analysis: Signal & Background Models, and Statistical Inference Reviewed

    XENON Collaboration

    Phys. Rev. D 99, 112009 (2019)   2019.6

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  • Observation of two-neutrino double electron capture in 124Xe with XENON1T Reviewed

    XENON Collaboration

    Nature   568   532 - 535   2019

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  • Constraining the Spin-Dependent WIMP-Nucleon Cross Sections with XENON1T Reviewed

    XENON Collaboration

    Phys. Rev. Lett.   122 ( 141302 )   2019

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  • A dual-phase xenon TPC for scintillation and ionisation yield measurements in liquid xenon Reviewed

    S.Kazama

    Eur. Phys. J. C   78 ( 351 )   2018

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  • Signal yields of keV electronic recoils and their discrimination from nuclear recoils in liquid xenon Reviewed

    XENON Collaboration

    Phys. Rev. D.   97 ( 092007 )   2018

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  • Intrinsic backgrounds from Rn and Kr in the XENON100 experiment Reviewed

    XENON Collaboration

    Eur. Phys. J. C   78 ( 132 )   2018

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  • The XENON1T dark matter experiment Reviewed

    XENON Collaboration

    EUROPEAN PHYSICAL JOURNAL C   77 ( 12 )   2017.12

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    DOI: 10.1140/epjc/s10052-017-5326-3

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  • Effective field theory search for high-energy nuclear recoils using the XENON100 dark matter detector Reviewed

    XENON Collaboration

    PHYSICAL REVIEW D   96 ( 4 )   2017.8

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    DOI: 10.1103/PhysRevD.96.042004

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  • Search for WIMP inelastic scattering off xenon nuclei with XENON100 Reviewed

    XENON Collaboration

    PHYSICAL REVIEW D   96 ( 2 )   2017.7

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    DOI: 10.1103/PhysRevD.96.022008

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  • DARWIN: towards the ultimate dark matter detector Reviewed

    DARWIN Collaboration

    JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS   1611 ( 11 )   11   2016.11

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    DOI: 10.1088/1475-7516/2016/11/017

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  • Development of CVD diamond detector for beam conditioning monitor at the SuperKEKB LINAC

    Shingo Kazama

    Proceedings of IPAC 2016   2016

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  • Search for SUSY in events with R-parity violation or long-lived particles at ATLAS

    Shingo Kazama

    HCP 2012 - HADRON COLLIDER PHYSICS SYMPOSIUM 2012   49 ( 2013 )   15014   2013

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (international conference proceedings)  

    DOI: 10.1051/epjconf/20134915014

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  • Search for new phenomena with the monojet and missing transverse momentum signature using the ATLAS detector in root s=7 TeV proton-proton collisions Reviewed

    ATLAS Collaboration

    PHYSICS LETTERS B   705 ( 4 )   294 - 312   2011.11

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.physletb.2011.10.006

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MISC

Presentations

  • Direct Dark Matter Search with XENON

    S. Kazama

    UGAP2022  2022.6 

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  • Search for New Physics in Electronic Recoil Data from XENONnT,

    S. Kazama

    DMNet seminar  2022.7 

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  • Future DARWIN R&D-I: Future photosensor,

    S. Kazama

    The 2nd DMNet International Symposium  2022.9 

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  • First WIMP Search Results from the XENONnT Experiment

    S. Kazama

    Heavy Flavor and Dark Matter Joint Unit Symposium  2023.3 

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  • 暗黒物質の直接探索

    風間慎吾

    高エネルギー春の学校,  2023.5 

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    Presentation type:Oral presentation (keynote)  

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  • Observation of Excess Electronic Recoil Events in XENON1T Invited

    Shingo Kazama

    2020.9 

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    Presentation type:Oral presentation (invited, special)  

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  • Observation of Excess Electronic Recoil Events in XENON1T Invited

    Shingo Kazama

    APCTP-KPS- JPS joint conference  2020.10 

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  • Direct Dark Matter Detection with Liquid Xenon Detectors

    S. Kazama

    KEK Theory Meeting on Particle Physics Phenomenology  2025.2 

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  • 大型液体キセノン検出器で解明する宇宙暗黒物質の謎

    風間慎吾

    国際先導研究会「ニュートリノによる宇宙創生の解明  2025.4 

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  • Low Dark-Count VUV SiPMs for the DARWIN Experiment

    S. Kazama

    Nagoya Workshop on Technology and Instrumentation in Future Liquid Noble Gas Detectors  2024.2 

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  • 極低放射能技術で解明する暗黒物質・ニュートリノの謎,

    風間慎吾

    第20回原子・分子・光科学(AMO)討論会  2024.6 

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  • XLZD: A Next-Generation Liquid Xenon Observatory for Dark Matter and Neutrino Physics

    S. Kazama

    4th DMnet symposium  2024.9 

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  • Dark matter direct detection: status, results and future plans

    S. Kazama

    Physics in LHC and Beyond,  2022.5 

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  • Search for Charginos Nearly Mass-Degenerate with the Lightest Neutralino Based on a Disappearing-Track Signature at √s = 8 TeV Invited

    Shingo Kazama

    2017.3 

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  • The XENON1T Dark Matter Experiment International conference

    Shingo Kazama

    Gordon Research Seminar  2017.6 

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  • Recent Results from the XENON1T Experiment International conference

    Shingo Kazama

    Gordon Research Conference  2017.6 

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    Language:English   Presentation type:Oral presentation (general)  

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  • Dark matter search with the XENON1T experiment International conference

    Shingo Kazama

    Joint annual Meeting of the Swiss/Austrian Physical Society  2017.8 

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  • First dark matter search results with XENON1T International conference

    Shingo Kazama

    CosPA2017  2017.12 

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  • The XENON dark matter program: current status and future prospects International conference

    Shingo Kazama

    XeSAT2018  2018.9 

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  • XENONnT: The next step in XENON Dark Matter Search International conference

    Shingo Kazama

    DBD18  2018.10 

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  • The XENON dark matter program: current status and future prospects International conference

    Shingo Kazama

    KMI2019  2019.2 

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  • Dark Matter Direct Detection: the state-of-the-art Invited International conference

    Shingo Kazama

    FPUA2019  2019.3 

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  • Latest Results from the XENON1T Dark Matter Project International conference

    Shingo Kazama

    43rd Johns Hopkins Workshop  2019.6 

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  • The XENONnT Neutron Veto Detector International conference

    Shingo Kazama

    TAUP2019  2019.9 

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  • A future generation-3 direct dark matter experiment: DARWIN Invited

    Shingo Kazama

    CRC town meeting  2019.12 

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  • Observation of Excess Electronic Recoil Events in XENON1T, Invited

    Shingo Kazama

    2020.7 

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  • Observation of Excess Electronic Recoil Events in XENON1T, Invited

    Shingo Kazama

    2020.7 

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  • Observation of Excess Electronic Recoil Events in XENON1T Invited

    Shingo Kazama

    online seminar @ Institute for Basic Science  2020.8 

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  • Observation of Excess Electronic Recoil Events in XENON1T, Invited

    Shingo Kazama

    2020.8 

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  • Migdal 効果による暗黒物質探索実験 Invited

    Shingo Kazama

    ミグダル観測検討会  2020.11 

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  • LXe dark matter search activities in Japan and its future Invited

    Shingo Kazama

    International Symposium of JSPS Core-to-Core program “DMNet”  2021.3 

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Awards

  • 小澤・吉川記念賞

    2021.4   公益信託 小澤・吉川記念 エレクトロニクス研究助成基金  

    風間慎吾

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  • Young Researcher's Award

    2017.3   Japan Association of High Energy Physicists  

    Shingo Kazama

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  • Young Scientist Award

    2017.3   The Physical Society of Japan  

    Shingo Kazama

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  • Springer thesis prize

    2014.3   University of Tokyo  

    Shingo Kazama

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  • The School of Science Encouragement Award

    2014.3   University of Tokyo  

    Shingo Kazama

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  • 早稲田応用物理会賞

    2009.3   早稲田大学  

    風間 慎吾

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Research Projects

  • Exploring the nature of dark matter with the large liquid xenon detector

    Grant number:24H02240  2024.4 - 2029.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Transformative Research Areas (A)

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    Authorship:Principal investigator 

    Grant amount:\121680000 ( Direct Cost: \93600000 、 Indirect Cost:\28080000 )

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  • Development of New Liquid Xenon Detectors with Thin Film Electrodes

    Grant number:24K00659  2024.4 - 2027.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Grant amount:\18460000 ( Direct Cost: \14200000 、 Indirect Cost:\4260000 )

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  • 極低放射能技術で解明する宇宙暗黒物質の謎

    2022.4 - 2025.3

    国立研究開発法人科学技術振興機構  創発的研究支援事業 

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    Authorship:Principal investigator 

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  • XENONnT検出器を用いた電子と弱く相互作用する暗黒物質の探索

    2021.10 - 2023.4

    日本学術振興会  学術変革領域研究(A) (公募研究) 

    風間慎吾

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  • 宇宙暗黒物質検出器 高感度化のための極 低放射能光検出器の 開発

    2021.4 - 2022.3

    公益信託 小澤・吉川記念 エレクトロニクス研究助成基金 

    風間慎吾

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    Authorship:Principal investigator  Grant type:Competitive

    Direct Cost: \2000000 )

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  • 宇宙暗黒物質検出器高感度化のための極低放射能技術の開発

    Grant number:20H01931  2020.4 - 2023.3

    日本学術振興会  科学研究費助成事業 基盤研究(B)  基盤研究(B)

    風間 慎吾

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    Authorship:Principal investigator 

    Grant amount:\17550000 ( Direct Cost: \13500000 、 Indirect Cost:\4050000 )

    本年度は、PMTとSiPM両方の特徴を併せ持つハイブリッド光検出器の高感度化と石英ガラスを用いた密閉型液体キセノン検出器の開発を行った。
    ハイブリッド光検出器に関しては、これまでに浜松ホトニクス社と共同で世界初のプロトタイプ検出器の開発を行い、室温での性能評価を行った。その結果、期待通りダークカウントを低減できていることが判明した。また検出効率の測定を行なったところ、1.5 kV程度の高電圧では数%とごく僅かであることが判明した。これは低エネルギー電子がSiPMのアバランシェ領域に辿り着けていないためである。本研究では、これを改善するため低エネルギー電子を薄いプラスチックシンチレータに照射し、これにより生成された光子をSiPMで検出するというアイデアを提案した。現在、その試作機の開発を行っている。
    密閉型液体キセノン検出器の開発に関しては、SPE SCREEN Quartz社の協力のもと、石英でできた真空容器の開発を行い、そのラドンシール特性の評価を窒素ガスを用いて行った。窒素ガスと1Lラドン検出器を用いた測定から、ラドンの侵入量を1/100に低減できることが判明し、現在キセノンガスを用いたシステムに応用し、ラドン排除性能の評価を行っている。

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  • 宇宙暗黒物質検出器高感度化のための極低放射能光検出器の開発

    2020.4 - 2021.3

    公益財団法人 木下記念事業団  学術研究活動助成 

    風間慎吾

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    Authorship:Principal investigator  Grant type:Competitive

    Direct Cost: \990000 )

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  • 透明高抵抗膜を用いた新たな暗黒物質検出器の開発

    2019.9 - 2021.9

    豊秋奨学会 

    Shingo Kazama

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    Authorship:Principal investigator  Grant type:Competitive

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  • 次世代暗黒物質探索実験のための新しい光検出器の開発

    2018.10 - 2020.3

    公益財団法人 大幸財団  自然科学系学術研究助成 

    Shingo Kazama

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  • XENON1T実験における暗黒物質の直接探索

    2016.4 - 2018.3

    日本学術振興会  海外特別研究員 

    風間 慎吾

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    Authorship:Principal investigator  Grant type:Competitive

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  • ヒッグスファクトリーのための新しいミューオン生成方法の確立

    2015.4 - 2016.3

    日本学術振興会  若手研究(B) 

    風間 慎吾

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\1170 ( Direct Cost: \900 、 Indirect Cost:\270 )

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  • LHC加速器とATLAS検出器を用いた標準理論を超えるモノジェット事象の探索

    Grant number:12J10055  2012.4 - 2014.3

    日本学術振興会  特別研究員奨励費  特別研究員奨励費

    風間 慎吾

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    Authorship:Principal investigator  Grant type:Competitive

    ヒッグス粒子が発見され、遂に標準理論は完成した。しかし、標準理論の枠組みではヒッグス粒子の質量は輻射補正を受け2次発散するため、この発見自体がヒッグス質量を安定化する新しい物理の存在を強く示唆している。超対称性理論はこれを説明する最も有望な理論であり、申請者は、LHC-ATLAS実験に参加し、特に、超対称性の破れが超共形不変性の量子異常の効果により起こる模型(AMSB模型)の検証を行った。AMSB模型では、最軽量ニュートラリーノとチャージーノの質量が非常に縮退し、チャージーノは長寿命(~0.2ns, cτ~6cm)となる。チャージーノは、運動量の低い荷電パイオンと検出器と相互作用しないニュートラリーノに崩壊するため、ATLAS実験の内部飛跡検出器では途中からヒットが無く、消失したかの様な飛跡として観測され、非常に特徴的な信号を形成する。申請者は、チャージーノの発見に向けて二つの大きな改善を行った。一つ目は、チャージーノ事象のトリガー効率の向上、二つ目は、チャージーノの飛跡再構成効率の向上である。ジェットと消失運動量の角度相関を用いたトポロジカルなトリガーの開発を行い、オンラインでのQCD事象の選択的な排除に成功し、約3倍高いトリガー効率を達成することに成功した。飛跡再構成効率の改善のためには、よりビーム衝突点に近い検出器を用いた、ヒット数の少ない新しい飛跡再構成方法の開発を行った。その結果、チャージーノの飛跡再構成効率として、従来よりも約0 (10-100)倍高い効率を達成する事に成功した。これら二つの改善点により、従来よりも約100倍高いのシグナル効率を達成する事が可能となり、LHCにおけるチャージーノ探索の基盤を形成した。残念ながら、チャージーノの発見には至らなかったが、AMSB模型に対する制限を計算した結果、95%の信頼度で質量が270GeV以下のチャージーノを棄却し、これまでの加速器実験の制限を約200GeV超えた、世界で最も厳しい制限を与えることに成功した。

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  • 極稀事象で探る宇宙物質の起源と進化:新たな宇宙物質観創生のフロンティア

    Grant number:24H02236  2024.4 - 2029.3

    日本学術振興会  科学研究費助成事業  学術変革領域研究(A)

    岸本 康宏, 中 竜大, 梅原 さおり, 石徹白 晃治, 佐藤 亮介, 諏訪 雄大, 風間 慎吾, 竹内 康雄, 関谷 洋之

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    Grant amount:\64220000 ( Direct Cost: \49400000 、 Indirect Cost:\14820000 )

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  • Dark matter search iin XENONnT and studies towarding a next generation large liquid xenon experiment.

    Grant number:24H00223  2024.4 - 2028.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

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    Grant amount:\47580000 ( Direct Cost: \36600000 、 Indirect Cost:\10980000 )

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  • Identification of Dark Matter with the World-Leading XENONnT Experiment

    Grant number:23H00104  2023.4 - 2028.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

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    Grant amount:\46800000 ( Direct Cost: \36000000 、 Indirect Cost:\10800000 )

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  • Dark Matter and new particle searches with a large liqud xenon detector

    Grant number:22H00127  2022.4 - 2026.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

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    Grant amount:\42250000 ( Direct Cost: \32500000 、 Indirect Cost:\9750000 )

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  • Study of new physics with electron-recoil events in the XENONnt and further breakthrough with a hermetic liquid xenon TPC

    Grant number:21H04466  2021.4 - 2025.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)  Grant-in-Aid for Scientific Research (A)

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    Authorship:Coinvestigator(s) 

    Grant amount:\41990000 ( Direct Cost: \32300000 、 Indirect Cost:\9690000 )

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  • Migdal effect observation with position-sensitive gaseous detectors

    Grant number:21H04471  2021.4 - 2025.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

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    Grant amount:\42120000 ( Direct Cost: \32400000 、 Indirect Cost:\9720000 )

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  • Direct Search for Dark Matter with High-Sensitivity Large-Scale Detectors

    Grant number:19H05805  2019.6 - 2024.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)  Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

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    Authorship:Coinvestigator(s) 

    Grant amount:\164580000 ( Direct Cost: \126600000 、 Indirect Cost:\37980000 )

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  • Purification of Insulating Liquids Used in Dark Matter Searches, Neutrino Physics, a nd Biomedical Imaging

    2019.4 - 2021.3

    Kai Martens

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    Grant type:Competitive

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  • Optimizing the XENON Dark Matter sensitivity with Kamioka expertise

    2019.2 - 2021.3

    Atsushi Takeda

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Social Activities

  • 地下から探る宇宙の謎

    Role(s): Lecturer

    KMI - ITbM  KMI x ITbM Mix Cafe「集まれ!話そう!科学のワクワク!」  2020.9

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    Type:Science cafe

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  • イタリアでの暗黒物質探索実験はコロナ時代でも止まらない

    Role(s): Lecturer

    高等研究院x未来社会創造機構「未来を見据えるコロナ禍の研究者たち」  第一回 高等研究院ウェビナー 高等研究院x未来社会創造機構「未来を見据えるコロナ禍の研究者たち」  2020.6

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    Type:Lecture

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  • How can we find dark matter?

    4th Cross-disciplinary Meeting of Japanese Young Scientists in Europe  2016.7

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    Type:Seminar, workshop

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  • 宇宙の暗黒物質を追い求めて (講演)

    Role(s): Lecturer

    埼玉県立浦和高等学校  2014.11

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Media Coverage

  • 暗黒物質直接探索実験XENON1Tが電子散乱事象の超過を観測 Internet

    KMI  2020.6

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  • 朝日中高生新聞に寄稿 Newspaper, magazine

    朝日中高生新聞  2015.8

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  • ヒッグス粒子の先、解明へ (新聞) Newspaper, magazine

    東京新聞  2012.10

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