Physics Letters B (Aug 2016)
Direct dark matter search by annual modulation in XMASS-I
- K. Abe,
- K. Hiraide,
- K. Ichimura,
- Y. Kishimoto,
- K. Kobayashi,
- M. Kobayashi,
- S. Moriyama,
- M. Nakahata,
- T. Norita,
- H. Ogawa,
- H. Sekiya,
- O. Takachio,
- A. Takeda,
- M. Yamashita,
- B.S. Yang,
- N.Y. Kim,
- Y.D. Kim,
- S. Tasaka,
- K. Fushimi,
- J. Liu,
- K. Martens,
- Y. Suzuki,
- B.D. Xu,
- R. Fujita,
- K. Hosokawa,
- K. Miuchi,
- Y. Onishi,
- N. Oka,
- Y. Takeuchi,
- Y.H. Kim,
- J.S. Lee,
- K.B. Lee,
- M.K. Lee,
- Y. Fukuda,
- Y. Itow,
- R. Kegasa,
- K. Kobayashi,
- K. Masuda,
- H. Takiya,
- K. Nishijima,
- S. Nakamura
Affiliations
- K. Abe
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu, 506-1205, Japan
- K. Hiraide
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu, 506-1205, Japan
- K. Ichimura
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu, 506-1205, Japan
- Y. Kishimoto
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu, 506-1205, Japan
- K. Kobayashi
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu, 506-1205, Japan
- M. Kobayashi
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu, 506-1205, Japan
- S. Moriyama
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu, 506-1205, Japan
- M. Nakahata
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu, 506-1205, Japan
- T. Norita
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu, 506-1205, Japan
- H. Ogawa
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu, 506-1205, Japan
- H. Sekiya
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu, 506-1205, Japan
- O. Takachio
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu, 506-1205, Japan
- A. Takeda
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu, 506-1205, Japan
- M. Yamashita
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu, 506-1205, Japan
- B.S. Yang
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu, 506-1205, Japan
- N.Y. Kim
- Center of Underground Physics, Institute for Basic Science, 70 Yuseong-daero 1689-gil, Yuseong-gu, Daejeon, 305-811, South Korea
- Y.D. Kim
- Center of Underground Physics, Institute for Basic Science, 70 Yuseong-daero 1689-gil, Yuseong-gu, Daejeon, 305-811, South Korea
- S. Tasaka
- Information and Multimedia Center, Gifu University, Gifu 501-1193, Japan
- K. Fushimi
- Institute of Socio-Arts and Sciences, The University of Tokushima, 1-1 Minamijosanjimacho Tokushima city, Tokushima, 770-8502, Japan
- J. Liu
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba, 277-8582, Japan
- K. Martens
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba, 277-8582, Japan
- Y. Suzuki
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba, 277-8582, Japan
- B.D. Xu
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba, 277-8582, Japan
- R. Fujita
- Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan
- K. Hosokawa
- Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan
- K. Miuchi
- Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan
- Y. Onishi
- Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan
- N. Oka
- Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan
- Y. Takeuchi
- Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan
- Y.H. Kim
- Korea Research Institute of Standards and Science, Daejeon 305-340, South Korea
- J.S. Lee
- Korea Research Institute of Standards and Science, Daejeon 305-340, South Korea
- K.B. Lee
- Korea Research Institute of Standards and Science, Daejeon 305-340, South Korea
- M.K. Lee
- Korea Research Institute of Standards and Science, Daejeon 305-340, South Korea
- Y. Fukuda
- Department of Physics, Miyagi University of Education, Sendai, Miyagi 980-0845, Japan
- Y. Itow
- Solar Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8602, Japan
- R. Kegasa
- Solar Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8602, Japan
- K. Kobayashi
- Solar Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8602, Japan
- K. Masuda
- Solar Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8602, Japan
- H. Takiya
- Solar Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8602, Japan
- K. Nishijima
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
- S. Nakamura
- Department of Physics, Faculty of Engineering, Yokohama National University, Yokohama, Kanagawa 240-8501, Japan
- DOI
- https://doi.org/10.1016/j.physletb.2016.05.081
- Journal volume & issue
-
Vol. 759,
no. C
pp. 272 – 276
Abstract
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.
Keywords
