학술논문
Direction-sensitive dark matter search with three-dimensional vector-type tracking in NEWAGE
Document Type
Working Paper
Author
Shimada, Takuya; Higashino, Satoshi; Ikeda, Tomonori; Nakamura, Kiseki; Yakabe, Ryota; Hashimoto, Takashi; Ishiura, Hirohisa; Nakamura, Takuma; Nakazawa, Miki; Kubota, Ryo; Nakayama, Ayaka; Ito, Hiroshi; Ichimura, Koichi; Abe, Ko; Kobayashi, Kazuyoshi; Tanimori, Toru; Kubo, Hidetoshi; Takada, Atsushi; Sekiya, Hiroyuki; Takeda, Atsushi; Miuchi, Kentaro
Source
Subject
Language
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.
Comment: submitted to PTEP
Comment: submitted to PTEP