Physics Letters B (Feb 2019)
A direct dark matter search in XMASS-I
- K. Abe,
- K. Hiraide,
- K. Ichimura,
- Y. Kishimoto,
- K. Kobayashi,
- M. Kobayashi,
- S. Moriyama,
- M. Nakahata,
- T. Norita,
- H. Ogawa,
- K. Sato,
- H. Sekiya,
- O. Takachio,
- A. Takeda,
- S. Tasaka,
- M. Yamashita,
- B.S. Yang,
- N.Y. Kim,
- Y.D. Kim,
- Y. Itow,
- K. Kanzawa,
- R. Kegasa,
- K. Masuda,
- H. Takiya,
- K. Fushimi,
- G. Kanzaki,
- K. Martens,
- Y. Suzuki,
- B.D. Xu,
- R. Fujita,
- K. Hosokawa,
- K. Miuchi,
- N. Oka,
- Y. Takeuchi,
- Y.H. Kim,
- K.B. Lee,
- M.K. Lee,
- Y. Fukuda,
- M. Miyasaka,
- 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; Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba, 277-8582, Japan
- K. Hiraide
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu, 506-1205, Japan; Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba, 277-8582, Japan
- K. Ichimura
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu, 506-1205, Japan; Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba, 277-8582, Japan
- Y. Kishimoto
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu, 506-1205, Japan; Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba, 277-8582, Japan
- K. Kobayashi
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu, 506-1205, Japan; Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba, 277-8582, 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; Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba, 277-8582, Japan
- M. Nakahata
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu, 506-1205, Japan; Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba, 277-8582, 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; Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba, 277-8582, Japan
- K. Sato
- 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; Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba, 277-8582, 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; Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba, 277-8582, Japan
- S. Tasaka
- 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; Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba, 277-8582, Japan
- B.S. Yang
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu, 506-1205, Japan; Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba, 277-8582, Japan
- N.Y. Kim
- Center for Underground Physics, Institute for Basic Science, 70 Yuseong-daero 1689-gil, Yuseong-gu, Daejeon, 305-811, South Korea
- Y.D. Kim
- Center for Underground Physics, Institute for Basic Science, 70 Yuseong-daero 1689-gil, Yuseong-gu, Daejeon, 305-811, South Korea
- Y. Itow
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Aichi 464-8601, Japan; Kobayashi-Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8602, Japan
- K. Kanzawa
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Aichi 464-8601, Japan
- R. Kegasa
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Aichi 464-8601, Japan
- K. Masuda
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Aichi 464-8601, Japan
- H. Takiya
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Aichi 464-8601, Japan
- K. Fushimi
- Institute of Socio-Arts and Sciences, The University of Tokushima, 1-1 Minamijosanjimacho Tokushima city, Tokushima, 770-8502, Japan
- G. Kanzaki
- Institute of Socio-Arts and Sciences, The University of Tokushima, 1-1 Minamijosanjimacho Tokushima city, Tokushima, 770-8502, 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
- N. Oka
- Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan
- Y. Takeuchi
- Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan; Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba, 277-8582, Japan
- Y.H. Kim
- Korea Research Institute of Standards and Science, Daejeon 305-340, South Korea; Center for Underground Physics, Institute for Basic Science, 70 Yuseong-daero 1689-gil, Yuseong-gu, Daejeon, 305-811, 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
- M. Miyasaka
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, 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
- Journal volume & issue
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Vol. 789
pp. 45 – 53
Abstract
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 97kg 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)×10−3day−1kg−1keVee−1 at 5keVee, 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 2.2×10−44cm2 for a WIMP mass of 60GeV/c2 at the 90% confidence level, which was the most stringent limit among results from single-phase liquid xenon detectors. Keywords: Dark matter, Low background, Liquid xenon
