Scalar dark matter explanation of the DAMPE data in the minimal left-right symmetric model
Cao, Junjie1,2; Guo, Xiaofei1; Shang, Liangliang1; Wang, Fei1,3; Wu, Peiwen4; Zu, Lei5,6
Source PublicationPHYSICAL REVIEW D
Corresponding AuthorWang, Fei( ; Wu, Peiwen(
AbstractThe left-right symmetric model (LRSM) is an attractive extension of the Standard Model (SM) that can address the origin of parity violation in the SM electroweak interactions, generate tiny neutrino masses, accommodate dark matter (DM) candidates, and provide a natural framework for baryogenesis through leptogenesis. In this work, we utilize the minimal LRSM to study the recently reported DAMPE results of the cosmic e(+)e(-) spectrum, which exhibits a tentative peak around 1.4 TeV, while satisfying the current neutrino data. We propose to explain the DAMPE peak with a complex scalar DM chi in two scenarios: (1) chi chi* -> H1++lH1-- -> l(i)(+)l(i)(+)l(j)(_)l(j)(-), and (2) chi chi* -> Hk++Hk-- -> l(i)(+)l(i)(+)l(j)(-)l(j)(-) accompanied by chi chi* -> H1+H1- -> l(i)(+)v(l1)l(-)v(lj), with l(i,j) = e, mu, tau and k =1, 2. We fit the theoretical prediction of the e(+)e(-) ethorne-spectrum to relevant experimental data to determine the scalar mass spectrum favored by the DAMPE excess. We also consider various constraints from theoretical principles and collider experiments, as well as DM relic density and direct search experiments. We find that there is ample parameter space to interpret the DAMPE data while also passing the constraints. On the other hand, our explanations usually imply the existence of other new physics at an energy scale ranging from10(7) to 10(11) GeV. Collider tests of our explanations are also discussed.
Indexed BySCI
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS IDWOS:000428779800003
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Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
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.Zhengzhou Univ, Sch Phys, Zhengzhou 450000, Henan, Peoples R China
4.KIAS, Sch Phys, 85 Hoegiro, Seoul 02455, South Korea
5.Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
6.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Anhui, Peoples R China
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Cao, Junjie,Guo, Xiaofei,Shang, Liangliang,et al. Scalar dark matter explanation of the DAMPE data in the minimal left-right symmetric model[J]. PHYSICAL REVIEW D,2018,97(6):14.
APA Cao, Junjie,Guo, Xiaofei,Shang, Liangliang,Wang, Fei,Wu, Peiwen,&Zu, Lei.(2018).Scalar dark matter explanation of the DAMPE data in the minimal left-right symmetric model.PHYSICAL REVIEW D,97(6),14.
MLA Cao, Junjie,et al."Scalar dark matter explanation of the DAMPE data in the minimal left-right symmetric model".PHYSICAL REVIEW D 97.6(2018):14.
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