A new way to test the WIMP dark matter models

doi:10.1007/JHEP08(2021)124

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	A new way to test the WIMP dark matter models
	Cheng, Wei 1; He, Yuan ; Diao, Jing-Wang ; Pan, Yu ; Zeng, Jun 2; Zhang, Jia-Wei
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2021
期号	8 页码:124
关键词	LARGE-SCALE STRUCTURE OBSERVATIONAL CONSTRAINTS COSMIC CURVATURE ENERGY EQUATION MASS GALAXIES QUASARS UNIVERSE
ISSN号	1029-8479
DOI	10.1007/JHEP08(2021)124
英文摘要	In this paper, we investigate the possibility of testing the weakly interacting massive particle (WIMP) dark matter (DM) models by applying the simplest phenomenological model which introduces an interaction term between dark energy (DE) and WIMP DM, i.e., Q = 3 gamma H-DM rho(DM). In general, the coupling strength gamma(DE) is close to 0 as the interaction between DE and WIMP DM is very weak, thus the effect of gamma(DE) on the evolution of Y associated with DM energy density can be safely neglected. Meanwhile, our numerical calculation also indicates that x(f) approximate to 20 is associated with DM freeze-out temperature, which is the same as the vanishing interaction scenario. As for DM relic density, it will be magnified by 2-3 gamma(DM)/2 [2 pi g(*)m(DM)(3)/(45s(0)x(f)(3))](gamma DM) times, which provides a new way to test WIMP DM models. As an example, we analyze the case in which WIMP DM is a scalar DM. (SGL+SNe+Hz) and (CMB+BAO+SNe) cosmological observations will give gamma(DM) = 0.134(-0.069)(+0.17) and gamma(DM) = -0.0008 +/- 0.0016, respectively. After further considering the constraints from DM direct detection experiment, DM indirect detection experiment, and DM relic density, we find that the allowed parameter space of the scalar DM model will be completely excluded for the former cosmological observations, while it will increase for the latter ones. Those two cosmological observations lead to an almost paradoxical conclusion. Therefore, one could expect more stringent constraints on the WMIP DM models, with the accumulation of more accurate cosmological observations in the near future.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27262]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Chongqing Univ Posts & Telecommun, Sch Sci, Chongqing 400065, Peoples R China 2.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China 3.Chongqing Univ, Dept Phys, Chongqing 401331, Peoples R China 4.Chongqing Univ Sci & Technol, Dept Phys, Chongqing 401331, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Wei,He, Yuan,Diao, Jing-Wang,et al. A new way to test the WIMP dark matter models[J]. JOURNAL OF HIGH ENERGY PHYSICS,2021(8):124.
APA	Cheng, Wei,He, Yuan,Diao, Jing-Wang,Pan, Yu,Zeng, Jun,&Zhang, Jia-Wei.(2021).A new way to test the WIMP dark matter models.JOURNAL OF HIGH ENERGY PHYSICS(8),124.
MLA	Cheng, Wei,et al."A new way to test the WIMP dark matter models".JOURNAL OF HIGH ENERGY PHYSICS .8(2021):124.