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Cheng, Wei1; He, Yuan; Diao, Jing-Wang; Pan, Yu; Zeng, Jun2; Zhang, Jia-Wei
A new way to test the WIMP dark matter models
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
语种英语
关键词LARGE-SCALE STRUCTURE OBSERVATIONAL CONSTRAINTS COSMIC CURVATURE ENERGY EQUATION MASS GALAXIES QUASARS UNIVERSE
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.
2021
ISSN1029-8479
期号8页码:124
合作性质国内
学科领域Physics
学科门类Physics, Particles & Fields
DOI10.1007/JHEP08(2021)124
收录类别SCIE
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/27262
专题SCI期刊论文
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
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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.
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