Direction-sensitive dark matter search with gaseous tracking detector NEWAGE-0.3b'

Kiseki Nakamura, Kentaro Miuchi, Toru Tanimori, Hidetoshi Kubo, Atsushi Takada, Joseph D. Parker, Tetsuya Mizumoto, Yoshitaka Mizumura, Hironobu Nishimura, Hiroyuki Sekiya, Atsushi Takeda, Tatsuya Sawano, Yoshihiro Matsuoka, Shotaro Komura, Yushiro Yamaguchi, Takashi Hashimoto

研究成果: Article査読

33 被引用数 (Scopus)

抄録

NEWAGE is a direction-sensitive dark matter search experiment using a micro-time-projection chamber filled with CF4 gas. Following our first underground measurement at Kamioka in 2008, we developed a new detector with improved sensitivity, NEWAGE-0.3b'. NEWAGE-0.3b' has twice the target volume of the previous detector, a lower energy threshold, and an improved data acquisition system. In 2013, a dark matter search was undertaken by NEWAGE-0.3b' in Kamioka underground laboratory. The exposure of 0.327 kg • days achieved a new 90% confidence level direction-sensitive spin-dependent cross-section limit of 557 pb for a 200 GeV/c2 weakly interacting massive particle. Relative to our first underground measurements, the new direction-sensitive limits are improved by a factor of ~ 10, and are the best achieved to date.

本文言語English
論文番号043F01
ジャーナルProgress of Theoretical and Experimental Physics
2015
4
DOI
出版ステータスPublished - 2015
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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