Direct dark matter search in XMASS-I

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

doi:10.1016/j.physletb.2018.10.070

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ID	114587
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\|Nihon University Sato, K. The University of Tokyo Sekiya, H. The University of Tokyo Takachio, O. The University of Tokyo Takeda, A. The University of Tokyo Tasaka, S. The University of Tokyo Yamashita, M. The University of Tokyo Yang, B.S. The University of Tokyo\|Institute for Basic Science Kim, N.Y. Institute for Basic Science Kim, Y.D. Institute for Basic Science Itow, Y. Nagoya University Kanzawa, K. Nagoya University Kegasa, R. Nagoya University Masuda, K. Nagoya University Takiya, H. Nagoya University 伏見, 賢一 Tokushima University 徳島大学教育研究者総覧 KAKEN研究者をさがす Kanzaki, G. The University of Tokushima 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\|Tohoku University Miuchi, K. 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, 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 Miyasaka, M. Tokai University Nishijima, K. Tokai University Nakamura, S. Yokohama National University
キーワード	Dark matter Low background Liquid xenon
資料タイプ	学術雑誌論文
抄録	A search for dark matter using an underground single-phase liquid xenon detector was conducted at the Kamioka Observatory in Japan, particularly for Weakly Interacting Massive Particles (WIMPs). We have used 705.9 live days of data in a fiducial volume containing 97 kg of liquid xenon at the center of the detector. The event rate in the fiducial volume after the data reduction was (4.2 ± 0.2) × 10−3 day−1 kg−1 keVee−1 at 5 keVee, with a signal efficiency of 20%. All the remaining events are consistent with our background evaluation, mostly of the “mis-reconstructed events” originated from 210Pb in the copper plates lining the detector’s inner surface. The obtained upper limit on a spin-independent WIMP-nucleon cross section was 2.2 × 10−44 cm2 for a WIMP mass of 60 GeV/c2 at the 90% confidence level, which was the most stringent limit among results from single-phase liquid xenon detectors.
掲載誌名	Physics Letters B
ISSN	03702693
cat書誌ID	AA11537044 AA00774026
出版者	Elsevier
巻	789
開始ページ	45
終了ページ	53
発行日	2018-12-05
権利情報	This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
EDB ID	349479
出版社版DOI	10.1016/j.physletb.2018.10.070
出版社版URL	https://doi.org/10.1016/j.physletb.2018.10.070
フルテキストファイル	physletb_789_45.pdf 838 KB
言語	eng
著者版フラグ	出版社版
部局	理工学系