TY - JOUR
T1 - Direction-sensitive dark matter search with the low-background gaseous detector NEWAGE-0.3b
AU - Ikeda, Tomonori
AU - Nakamura, Kiseki
AU - Shimada, Takuya
AU - Yakabe, Ryota
AU - Hashimoto, Takashi
AU - Ishiura, Hirohisa
AU - Nakamura, Takuma
AU - Ito, Hiroshi
AU - Ichimura, Koichi
AU - Abe, Ko
AU - Kobayashi, Kazuyoshi
AU - Tanimori, Toru
AU - Kubo, Hidetoshi
AU - Takada, Atsushi
AU - Sekiya, Hiroyuki
AU - Takeda, Atsushi
AU - Miuchi, Kentaro
N1 - Funding Information:
This work was partly supported by Japan Society for the promotion of Science (JSPS) KAKENHI (Grant-in-Aids for Scientific Research) (grant nos. 16H02189, 19684005, 23684014 and 26104005, 19H05806), JSPS Bilateral Collaborations (Joint Research Projects and Seminars) program, ICRR Joint-Usage, Program for Advancing Strategic International Networks to Accelerate the Circulation of Talented Researches (R2607), and JSPS Research Fellow (grant nos. 17J03537).
Publisher Copyright:
© The Author(s) 2021. Published by Oxford University Press on behalf of the Physical Society of Japan.
PY - 2021/6/1
Y1 - 2021/6/1
N2 - NEWAGE is a direction-sensitive dark matter search using a low-pressure gaseous time projection chamber. A low alpha-ray emission rate micro pixel chamber had been developed in order to reduce background for dark matter search. We conducted the dark matter search at the Kamioka Observatory in 2018. The total live time was 107.6 d, corresponding to an exposure of 1.1 kg$]]>d. Two events remained in the energy region of 50-60 keV, which was consistent with the expected background of 2.5 events. A directional analysis was carried out and no significant forward-backward asymmetry derived from the WIMP-nucleus elastic scatterings was found. Thus a 90 confidence level upper limit on the spin-dependent WIMP-proton cross-section of 50 pb for a WIMP mass of 100 GeVc^{-2}$]]> was derived. This limit is the most stringent yet obtained from direction-sensitive dark matter search experiments.
AB - NEWAGE is a direction-sensitive dark matter search using a low-pressure gaseous time projection chamber. A low alpha-ray emission rate micro pixel chamber had been developed in order to reduce background for dark matter search. We conducted the dark matter search at the Kamioka Observatory in 2018. The total live time was 107.6 d, corresponding to an exposure of 1.1 kg$]]>d. Two events remained in the energy region of 50-60 keV, which was consistent with the expected background of 2.5 events. A directional analysis was carried out and no significant forward-backward asymmetry derived from the WIMP-nucleus elastic scatterings was found. Thus a 90 confidence level upper limit on the spin-dependent WIMP-proton cross-section of 50 pb for a WIMP mass of 100 GeVc^{-2}$]]> was derived. This limit is the most stringent yet obtained from direction-sensitive dark matter search experiments.
KW - F41
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U2 - 10.1093/ptep/ptab053
DO - 10.1093/ptep/ptab053
M3 - Article
AN - SCOPUS:85127055234
SN - 2050-3911
VL - 2021
JO - Progress of Theoretical and Experimental Physics
JF - Progress of Theoretical and Experimental Physics
IS - 6
M1 - 063F01
ER -