Note on Higgs Decay into Two Photons H -> gamma gamma
文献类型：期刊论文
| 作者 | Wu, YL
|
| 刊名 | COMMUNICATIONS IN THEORETICAL PHYSICS
 |
| 出版日期 | 2012 |
| 卷号 | 57期号:3页码:427-434 |
| 关键词 | PRESERVING LOOP REGULARIZATION GAUGE FIELDS BOSON DECAY RENORMALIZATION QFTS |
| ISSN号 | 0253-6102 |
| 通讯作者 | Huang, D (reprint author), Chinese Acad Sci, Inst Theoret Phys, KITPC, SKLTP, Beijing 100190, Peoples R China. |
| 英文摘要 | The Higgs decay H -> gamma gamma due to the virtual W-loop effect is revisited in the unitary gauge by using the symmetry-preserving and divergent-behavior-preserving loop regularization method, which is realized in the four-dimensional space-time without changing original theory. Though the one-loop amplitude of H -> gamma gamma is finite as the Higgs boson in the standard model has no direct interaction with the massless photons at tree level, it involves both tensor-type and scalar-type divergent integrals which can in general destroy the gauge invariance without imposing a proper regularization scheme to make them well-defined. As the loop regularization scheme can ensure the consistency conditions between the regularized tensor-type and scalar-type divergent irreducible loop integrals to preserve gauge invariance, we explicitly show the absence of decoupling in the limit M-W/M-H -> 0 and obtain a result agreeing exactly with the earlier one in the literature. We then clarify the discrepancy of the earlier result from the recent one obtained by R. Gastmans, S.L. Wu and T.T. Wu. The advantage of calculation in the unitary gauge becomes manifest in that the non-decoupling arises from the longitudinal contribution of the W gauge boson. |
| 学科主题 | Physics |
| 收录类别 | SCI |
| 资助信息 | National Science Foundation of China [10821504, 10975170]; Chinese Academy of Sciences |
| 原文出处 | http://dx.doi.org/10.1088/0253-6102/57/3/14 |
| 语种 | 英语 |
| WOS记录号 | WOS:000301920000014 |
| 公开日期 | 2014-04-25 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/15151]  |
| 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 | Wu, YL. Note on Higgs Decay into Two Photons H -> gamma gamma[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2012,57(3):427-434. |
| APA | Wu, YL.(2012).Note on Higgs Decay into Two Photons H -> gamma gamma.COMMUNICATIONS IN THEORETICAL PHYSICS,57(3),427-434. |
| MLA | Wu, YL."Note on Higgs Decay into Two Photons H -> gamma gamma".COMMUNICATIONS IN THEORETICAL PHYSICS 57.3(2012):427-434. |
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。