Interpretation of the Galactic Center excess and electroweak phase transition in the NMSSM
文献类型：期刊论文
| 作者 | Bi, XJ; Bian, LG; Huang, WC; Shu, J ; Yin, PF
|
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2015 |
| 卷号 | 92期号:2页码:23507 |
| 通讯作者 | Bian, LG (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China. |
| 英文摘要 | The gamma-ray excess observed by the Fermi-LAT in the Galactic Center can be interpreted by the dark matter annihilation to b (b) over bar via a light pseudoscalar in the next-to-minimal supersymmetric standard model (NMSSM). It is interesting to note that the corresponding singlet scalar is useful to achieve a strongly first-order phase transition required by the electroweak baryogenesis. In this paper, we investigate the possibility that the NMSSM model can simultaneously accommodate these two issues. The phase transition strength can be characterized by the vacua energy gap at zero temperature and be sufficiently enhanced by the tree-level effect in the NMSSM. We find that the annihilation of singlino/Higgsino dark matter (DM) particles occurring close to the light pseudoscalar resonance is favored by the Galactic Center excess and the observed DM relic density, and some resulting regions in the parameter space with a small kappa/lambda. and a negative A. can simultaneously account for a successful strongly first-order electroweak phase transition. |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 类目[WOS] | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 关键词[WOS] | SUPERSYMMETRIC STANDARD MODEL ; TAN BETA ; BARYOGENESIS ; ABUNDANCES ; UNIVERSE ; PROGRAM ; SINGLET |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/20931]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 推荐引用方式 GB/T 7714 | Bi, XJ,Bian, LG,Huang, WC,et al. Interpretation of the Galactic Center excess and electroweak phase transition in the NMSSM[J]. PHYSICAL REVIEW D,2015,92(2):23507. |
| APA | Bi, XJ,Bian, LG,Huang, WC,Shu, J,&Yin, PF.(2015).Interpretation of the Galactic Center excess and electroweak phase transition in the NMSSM.PHYSICAL REVIEW D,92(2),23507. |
| MLA | Bi, XJ,et al."Interpretation of the Galactic Center excess and electroweak phase transition in the NMSSM".PHYSICAL REVIEW D 92.2(2015):23507. |
入库方式： OAI收割
来源：理论物理研究所
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