ID 113056
Author
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
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
Keywords
Dark matter
Annual modulation
Liquid xenon
Content Type
Journal Article
Description
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.
Journal Title
Physics Letters B
ISSN
03702693
NCID
AA11537044
AA00774026
Publisher
Elsevier
Volume
759
Start Page
272
End Page
276
Published Date
2016-05-30
Rights
©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
DOI (Published Version)
URL ( Publisher's Version )
FullText File
language
eng
TextVersion
Publisher
departments
Science and Technology