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 | |
刊名 | PHYSICAL REVIEW D
![]() |
2018-05-10 | |
卷号 | 97期号:9页码:8 |
ISSN号 | 2470-0010 |
DOI | 10.1103/PhysRevD.97.095011 |
英文摘要 | 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. |
WOS关键词 | COSMIC-RAYS ; RENORMALIZATION ; POSITRONS ; SPHENO ; MODELS ; ORIGIN |
WOS研究方向 | Astronomy & Astrophysics ; Physics |
语种 | 英语 |
出版者 | AMER PHYSICAL SOC |
WOS记录号 | WOS:000432972700004 |
内容类型 | 期刊论文 |
源URL | [http://libir.pmo.ac.cn/handle/332002/21949] ![]() |
专题 | 中国科学院紫金山天文台 |
通讯作者 | Wang, Fei; Wu, Peiwen |
作者单位 | 1.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 |
推荐引用方式 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. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论