Scalar dark matter interpretation of the DAMPE data with U(l) gauge Interactions
Cao, Junjie1,2; Feng, Lei3; Guo, Xiaofei1; Shang, Liangliang1; Wang, Fei1,4; Wu, Peiwen5
Source PublicationPHYSICAL REVIEW D

Recently, the Dark Matter Particle Explorer (DAMPE) experiment released the new measurement of the total cosmic e(+) e(-) flux between 25 GeV and 4.6 TeV, which indicates a spectral softening at around 0.9 TeV and a tentative peak at around 1.4 TeV. We utilize a scalar dark matter (DM) model to explain the DAMPE peak by XX -> Z'Z' -> l (l) over barl'(l) over bar 'l with an additional anomaly-free gauged U (l) family symmetry, in which X, Z'and l((')) denote, respectively, the scalar DM, the new gauge boson, and l((')) = e, mu, tau, with m(x) similar to m(z)' similar to 2 x 1.5 (TeV). We first illustrate that the minimal framework Gsm X U(l)(Y') with the above mass choices can explain the DAMPE excess, which, however, be excluded by LHC constraints from the Z' searches. Then, we study a nonminimal framework G(SM) X U(l)(Y') x U(i)(Y") in which U(l)(Y") mixes with U(l)(Y'). We show that such a framework can interpret the DAMPE data and at the same time survive all other constraints including the DM relic abundance, DM direct detection, and collider bounds. We also investigate the predicted e(+) e(-) spectrum in this framework and find that the mass splitting Delta m = m(x) - m(z") should be less than about 17 GeV to produce the peaklike structure.

Indexed BySCI
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS IDWOS:000432972700004
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Document Type期刊论文
Corresponding AuthorWang, Fei; Wu, Peiwen
Affiliation1.Henan Normal Univ, Coll Phys & Mat Sci, Xinxiang 453007, Peoples R China
2.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
3.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China
4.Zhengzhou Univ, Sch Phys, Zhengzhou 450000, Henan, Peoples R China
5.KIAS, Sch Phys, 85 Hoegiro, Seoul 02455, South Korea
Recommended Citation
GB/T 7714
Cao, Junjie,Feng, Lei,Guo, Xiaofei,et al. Scalar dark matter interpretation of the DAMPE data with U(l) gauge Interactions[J]. PHYSICAL REVIEW D,2018,97(9):8.
APA Cao, Junjie,Feng, Lei,Guo, Xiaofei,Shang, Liangliang,Wang, Fei,&Wu, Peiwen.(2018).Scalar dark matter interpretation of the DAMPE data with U(l) gauge Interactions.PHYSICAL REVIEW D,97(9),8.
MLA Cao, Junjie,et al."Scalar dark matter interpretation of the DAMPE data with U(l) gauge Interactions".PHYSICAL REVIEW D 97.9(2018):8.
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