Direct dark matter search with XMASS: modulation analysis

14th International Conference on Topics in Astroparticle and Underground Physics

物理学;天文学

Kobayashi, Kazuyoshi^1,2

Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu

506-1205, Japan^1

Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa, Chiba

277-8582, Japan^2

关键词: Annual modulations;    Dark matter;    Dark matter searches;    Massive particles;    Model independent;    Modulation effects;    Single-phase liquids;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/718/4/042032/pdf
DOI  :  10.1088/1742-6596/718/4/042032

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

Dark matter search by means of the annual modulation was done using large single-phase liquid-xenon detector, XMASS. With the data from November-2013 to March-2015, model independent analysis showed a weak modulation effect, however, the result can be explained by a fluctuation of the background at the level of 7-17%. If we assume the standard weekly interacting massive particles dark matter, we exclude almost all the allowed region claimed by the DAMA/LIBRA experiment. This is the first extensive search over their allowed region exploiting the annual modulation with high statistics data.