Dilution of dark matter relic density in singlet extension models
文献类型：期刊论文
| 作者 | Xiao, Yang1,2; Yang, Jin Min1,2; Zhang, Yang1 |
| 刊名 | JOURNAL OF HIGH ENERGY PHYSICS
 |
| 出版日期 | 2023 |
| 期号 | 2页码:8 |
| ISSN号 | 1029-8479 |
| 关键词 | PHASE-TRANSITION BARYOGENESIS SUPERSYMMETRY INFLATION UNIVERSE PROGRAM |
| DOI | 10.1007/JHEP02(2023)008 |
| 英文摘要 | We study the dilution of dark matter (DM) relic density caused by the electroweak first-order phase transition (FOPT) in the singlet extension models, including the singlet extension of the standard model (xSM), of the two-Higgs-doublet model (2HDM+S) and the next-to-minimal supersymmetric standard model (NMSSM). We find that in these models the entropy released by the strong electroweak FOPT can dilute the DM density to 1/3 at most. Nevertheless, in the xSM and NMSSM where the singlet field configure is relevant to the phase transition temperature, the strong FOPT always happens before the DM freeze-out, making the dilution effect negligible for the current DM density. We derive an analytical upper bound on the freeze-out temperature and a numerical lower bound on nucleation temperature in the xSM. On the other hand, in the 2HDM+S where the DM freeze-out temperature is independent of FOPT, the dilution may salvage some parameter space excluded by excessive DM relic density or by DM direct detections. |
| 学科主题 | Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27963]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.Zhengzhou Univ, Sch Phys, Zhengzhou 45001, Peoples R China 2.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xiao, Yang,Yang, Jin Min,Zhang, Yang. Dilution of dark matter relic density in singlet extension models[J]. JOURNAL OF HIGH ENERGY PHYSICS,2023(2):8. |
| APA | Xiao, Yang,Yang, Jin Min,&Zhang, Yang.(2023).Dilution of dark matter relic density in singlet extension models.JOURNAL OF HIGH ENERGY PHYSICS(2),8. |
| MLA | Xiao, Yang,et al."Dilution of dark matter relic density in singlet extension models".JOURNAL OF HIGH ENERGY PHYSICS .2(2023):8. |
入库方式： OAI收割
来源：理论物理研究所
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