期刊
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
卷 -, 期 8, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1475-7516/2020/08/011
关键词
dark matter theory; particle physics - cosmology connection; physics of the early universe
资金
- Ministry of Education, Culture, Sports, Science, and Technology (MEXT), Japan [17H02878, 18K13535, 19H04609, 20H01895]
- World Premier International Research Center Initiative (WPI), MEXT, Japan
- Deutsche Forschungsgemeinschaft [EXC 153, SFB 1258]
- European Union [H2020-MSCA-ITN-2015/674896, 690575]
- Leading Initiative for Excellent Young Researchers, MEXT, Japan
A weakly interacting massive particle (WIMP) is a leading candidate of the dark matter. The WIMP dark matter abundance is determined by the freeze-out mechanism. Once we know the property of the WIMP particle such as the mass and interaction, we can predict the dark matter abundance. There are, however, several uncertainties in the estimation of the WIMP dark matter abundance. In this work, we focus on the effect from Standard Model thermodynamics. We revisit the estimation of the WIMP dark matter abundance and its uncertainty due to the equation of state (EOS) in the Standard Model. We adopt the up-to-date estimate of the EOS of the Standard Model in the early Universe and find nearly 10% difference in the 1-1000 GeV dark matter abundance, compared to the conventional estimate of the EOS.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据