Direct dark matter search by annual modulation in XMASS-I

Abe, K.; Hiraide, K.; Ichimura, K.; Kishimoto, Y.; Kobayashi, K.; Kobayashi, M.; Moriyama, S.; Nakahata, M.; Norita, T.; Ogawa, H.; Sekiya, H.; Takachio, O.; Takeda, A.; Yamashita, M.; Yang, B.S.; Kim, N.Y.; Kim, Y.D.; Tasaka, S.; Fushimi, Ken-Ichi; Liu, J.; Martens, K.; Suzuki, Y.; Xu, B.D.; Fujita, R.; Hosokawa, K.; Miuchi, K.; Onishi, Y.; Oka, N.; Takeuchi, Y.; Kim, Y.H.; Lee, J.S.; Lee, K.B.; Lee, M.K.; Fukuda, Y.; Itow, Y.; Kegasa, R.; Kobayashi, K.; Masuda, K.; Takiya, H.; Nishijima, K.; Nakamura, S.

doi:10.1016/j.physletb.2016.05.081

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ID	113056
著者	Abe, K. The University of Tokyo Hiraide, K. The University of Tokyo Ichimura, K. The University of Tokyo Kishimoto, Y. The University of Tokyo Kobayashi, K. The University of Tokyo Kobayashi, M. The University of Tokyo Moriyama, S. The University of Tokyo Nakahata, M. The University of Tokyo Norita, T. The University of Tokyo Ogawa, H. The University of Tokyo Sekiya, H. The University of Tokyo Takachio, O. The University of Tokyo Takeda, A. The University of Tokyo Yamashita, M. The University of Tokyo Yang, B.S. The University of Tokyo Kim, N.Y. Institute for Basic Science Kim, Y.D. Institute for Basic Science Tasaka, S. Gifu University\|The University of Tokyo 伏見, 賢一 The University of Tokushima 徳島大学教育研究者総覧 KAKEN研究者をさがす Liu, J. The University of Tokyo\|The University of South Dakota Martens, K. The University of Tokyo Suzuki, Y. The University of Tokyo Xu, B.D. The University of Tokyo Fujita, R. Kobe University Hosokawa, K. Kobe University Miuchi, K. Kobe University Onishi, Y. Kobe University Oka, N. Kobe University Takeuchi, Y. Kobe University\|The University of Tokyo Kim, Y.H. Korea Research Institute of Standards and Science\|Institute for Basic Science Lee, J.S. Korea Research Institute of Standards and Science Lee, K.B. Korea Research Institute of Standards and Science Lee, M.K. Korea Research Institute of Standards and Science Fukuda, Y. Miyagi University of Education Itow, Y. Nagoya University Kegasa, R. Nagoya University Kobayashi, K. Nagoya University Masuda, K. Nagoya University Takiya, H. Nagoya University Nishijima, K. Tokai University Nakamura, S. Yokohama National University
キーワード	Dark matter Annual modulation Liquid xenon
資料タイプ	学術雑誌論文
抄録	A search for dark matter was conducted by looking for an annual modulation signal due to the Earth’s rotation around the Sun using XMASS, a single phase liquid xenon detector. The data used for this analysis was 359.2 live days times 832 kg of exposure accumulated between November 2013 and March 2015. When we assume Weakly Interacting Massive Particle (WIMP) dark matter elastically scattering on the target nuclei, the exclusion upper limit of the WIMP–nucleon cross section 4.3 ×10−41 cm2 at 8 GeV/c2 was obtained and we exclude almost all the DAMA/LIBRA allowed region in the 6 to 16 GeV/c2 range at ∼10−40 cm2. The result of a simple modulation analysis, without assuming any specific dark matter model but including electron/γ events, showed a slight negative amplitude. The p-values obtained with two independent analyses are 0.014 and 0.068 for null hypothesis, respectively. We obtained 90% C.L. upper bounds that can be used to test various models. This is the first extensive annual modulation search probing this region with an exposure comparable to DAMA/LIBRA.
掲載誌名	Physics Letters B
ISSN	03702693
cat書誌ID	AA11537044 AA00774026
出版者	Elsevier
巻	759
開始ページ	272
終了ページ	276
発行日	2016-05-30
権利情報	©2016 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
EDB ID	320268
出版社版DOI	10.1016/j.physletb.2016.05.081
出版社版URL	https://doi.org/10.1016/j.physletb.2016.05.081
フルテキストファイル	physletb_759_272.pdf 372 KB
言語	eng
著者版フラグ	出版社版
部局	理工学系