Direction-sensitive dark matter search with three-dimensional vector-type tracking in NEWAGE

Takuya Shimada; Satoshi Higashino; Tomonori Ikeda; Kiseki Nakamura; Ryota Yakabe; Takashi Hashimoto; Hirohisa Ishiura; Takuma Nakamura; Miki Nakazawa; Ryo Kubota; Ayaka Nakayama; Hiroshi Ito; Koichi Ichimura; Ko Abe; Kazuyoshi Kobayashi; Toru Tanimori; Hidetoshi Kubo; Atsushi Takada; Hiroyuki Sekiya; Atsushi Takeda; Kentaro Miuchi

arXiv · 2301.04779

Direction-sensitive dark matter search with three-dimensional vector-type tracking in NEWAGE

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Abstract

NEWAGE is a direction-sensitive dark matter search experiment with a three-dimensional tracking detector based on a gaseous micro time projection chamber. A direction-sensitive dark matter search was carried out at Kamioka Observatory with a total live time of 318.0 days resulting in an exposure of 3.18 kg$\cdot$days. A new gamma-ray rejection and a head-tail determination analysis were implemented for this work. No significant non-isotropic signal from the directional analysis was found and a 90% confidence level upper limit on spin-dependent WIMP-proton cross section of 25.7 pb for WIMP mass of 150 GeV/c2 was derived. This upper limit is the most stringent in the direction-sensitive dark matter searches.

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Takuya Shimada, Satoshi Higashino, Tomonori Ikeda, Kiseki Nakamura, Ryota Yakabe, Takashi Hashimoto, Hirohisa Ishiura, Takuma Nakamura, Miki Nakazawa, Ryo Kubota, Ayaka Nakayama, Hiroshi Ito, Koichi Ichimura, Ko Abe, Kazuyoshi Kobayashi, Toru Tanimori, Hidetoshi Kubo, Atsushi Takada, Hiroyuki Sekiya, Atsushi Takeda, Kentaro Miuchi. 2023-01-12. Direction-sensitive dark matter search with three-dimensional vector-type tracking in NEWAGE. https://arxiv.org/abs/2301.04779

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