Lepton flavor-changing scalar interactions and g-2 of the muon
文献类型：期刊论文
| 作者 | Zhou, YF ; Wu, YL; Zhou, YF , Univ Munich, Sekt Phys, Theresienstr 37, D-80333 Munich, Germany.
|
| 刊名 | EUROPEAN PHYSICAL JOURNAL C
 |
| 出版日期 | 2003 |
| 卷号 | 27期号:4页码:577-585 |
| 关键词 | Anomalous Magnetic-moment 2 Higgs Doublets Cp Violation Charged-higgs Supersymmetry Breaking 2-higgs-doublet Model 2-loop Contributions Extra Dimensions Neutral Currents Standard Model |
| ISSN号 | 1434-6044 |
| 英文摘要 | A systematic investigation on the muon's anomalous magnetic moment and a related lepton flavor-violating process such as mu --> egamma, tau --> egamma and tau --> mugamma is made at the two-loop level in the models with flavor-changing scalar interactions. The two-loop diagrams with double scalar exchanges are studied and their contributions are found to be compatible with the ones from the Barr-Zee diagram. By comparing with the latest data, the allowed ranges for the relevant Yukawa couplings Y-ij in the lepton sector are obtained. The results show the hierarchical structure Y-mue,Y-taue much less than Y-mutau similar or equal to Y-mumu in the physical basis if Deltaalpha(mu) is found to be > 50 x 10(-11). It deviates from the widely used ansatz in which the off-diagonal elements are proportional to the square root of the products of the related fermion masses. An alternative Yukawa coupling matrix in the lepton sector is suggested to understand the current data. With such a reasonable Yukawa coupling ansatz, the decay rate of tau --> mugamma is found to be near the current experiment upper bound. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000182708200009 |
| 公开日期 | 2012-08-29 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13325]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Zhou, YF , Univ Munich, Sekt Phys, Theresienstr 37, D-80333 Munich, Germany. |
| 推荐引用方式 GB/T 7714 | Zhou, YF,Wu, YL,Zhou, YF , Univ Munich, Sekt Phys, Theresienstr 37, D-80333 Munich, Germany.. Lepton flavor-changing scalar interactions and g-2 of the muon[J]. EUROPEAN PHYSICAL JOURNAL C,2003,27(4):577-585. |
| APA | Zhou, YF,Wu, YL,&Zhou, YF , Univ Munich, Sekt Phys, Theresienstr 37, D-80333 Munich, Germany..(2003).Lepton flavor-changing scalar interactions and g-2 of the muon.EUROPEAN PHYSICAL JOURNAL C,27(4),577-585. |
| MLA | Zhou, YF,et al."Lepton flavor-changing scalar interactions and g-2 of the muon".EUROPEAN PHYSICAL JOURNAL C 27.4(2003):577-585. |
入库方式： OAI收割
来源：理论物理研究所
浏览0
下载0
收藏0
其他版本
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。