Can electron and muon g-2 anomalies be jointly explained in SUSY?
文献类型：期刊论文
| 作者 | Li, Song2; Xiao, Yang2; Yang, Jin Min2 |
| 刊名 | EUROPEAN PHYSICAL JOURNAL C
 |
| 出版日期 | 2022 |
| 卷号 | 82期号:3页码:276 |
| ISSN号 | 1434-6044 |
| 关键词 | DARK-MATTER HIGGS PHENOMENOLOGY COMPUTATIONAL TOOL MAGNETIC-MOMENT PROGRAM FLAVOR MSSM EXTENSIONS SPHENO MODEL |
| DOI | 10.1140/epjc/s10052-022-10242-y |
| 英文摘要 | The FNAL+BNL measurements for muon g - 2 is 4.2 sigma above the SM prediction, and the Berkeley Cs-133 measurement for the fine-structure constant alpha(em) leads to the SM prediction for electron g - 2 which is 2.4 sigma above the experimental value. Hence, a joint explanation of both anomalies requires a positive contribution to muon g - 2 and a negative contribution to electron g - 2, which is rather challenging. In this work we explore the possibility of such a joint explanation in the minimal supersymmetric standard model (MSSM). Assuming no universality between smuon and selectron soft masses, we find out a part of parameter space for a joint explanation at 2 sigma level, i.e., mu M-1, mu M-2 < 0, m(L1), m(E2) < 200 GeV, m(L2) being much larger than the soft masses of other sleptons, vertical bar M-1 vertical bar < 125 GeV and mu < 400 GeV. This part of parameter space can survive LHC and LEP constraints, but gives an over-abundance for dark matter if the bino-like lightest neutralino is assumed to be the dark matter candidate. With the assumption that the dark matter candidate is a superWIMP (say a pseudo-goldstino in multisector SUSY breaking scenarios, whose mass can be as light as GeV and produced from the late-decay of the thermally freeze-out lightest neutralino), the dark matter problem can be avoided. So, we conclude that the MSSM may give a joint explanation for the muon and electron g - 2 anomalies at 2 sigma level (the muon g - 2 anomaly can be even ameliorated to l sigma). |
| 学科主题 | Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27693]  |
| 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.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Song,Xiao, Yang,Yang, Jin Min. Can electron and muon g-2 anomalies be jointly explained in SUSY?[J]. EUROPEAN PHYSICAL JOURNAL C,2022,82(3):276. |
| APA | Li, Song,Xiao, Yang,&Yang, Jin Min.(2022).Can electron and muon g-2 anomalies be jointly explained in SUSY?.EUROPEAN PHYSICAL JOURNAL C,82(3),276. |
| MLA | Li, Song,et al."Can electron and muon g-2 anomalies be jointly explained in SUSY?".EUROPEAN PHYSICAL JOURNAL C 82.3(2022):276. |
入库方式： OAI收割
来源：理论物理研究所
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