Details

Autor(en) / Beteiligte

• 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, K.
• 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.

Titel

A direct dark matter search in XMASS-I

Ist Teil von

• Physics letters. B, 2019-02, Vol.789, p.45-53

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2019

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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.