ITP OpenIR  > 理论物理所2012年知识产出
Note on Higgs Decay into Two Photons H -> gamma gamma
Huang, D; Tang, Y; Wu, YL; Huang, D (reprint author), Chinese Acad Sci, Inst Theoret Phys, KITPC, SKLTP, Beijing 100190, Peoples R China.
2012
发表期刊COMMUNICATIONS IN THEORETICAL PHYSICS
ISSN0253-6102
卷号57期号:3页码:427-434
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.
部门归属[Huang Da; Wu Yue-Liang] Chinese Acad Sci, Inst Theoret Phys, KITPC, SKLTP, Beijing 100190, Peoples R China; [Tang Yong] Natl Ctr Theoret Sci, Div Phys, Hsinchu, Taiwan
关键词Preserving Loop Regularization Gauge Fields Boson Decay Renormalization Qfts
学科领域Physics
资助者National Science Foundation of China [10821504, 10975170]; Chinese Academy of Sciences ; National Science Foundation of China [10821504, 10975170]; Chinese Academy of Sciences ; National Science Foundation of China [10821504, 10975170]; Chinese Academy of Sciences ; National Science Foundation of China [10821504, 10975170]; Chinese Academy of Sciences
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收录类别SCI
语种英语
资助者National Science Foundation of China [10821504, 10975170]; Chinese Academy of Sciences ; National Science Foundation of China [10821504, 10975170]; Chinese Academy of Sciences ; National Science Foundation of China [10821504, 10975170]; Chinese Academy of Sciences ; National Science Foundation of China [10821504, 10975170]; Chinese Academy of Sciences
WOS记录号WOS:000301920000014
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被引频次:12[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/15151
专题理论物理所2012年知识产出
通讯作者Huang, D (reprint author), Chinese Acad Sci, Inst Theoret Phys, KITPC, SKLTP, Beijing 100190, Peoples R China.
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GB/T 7714
Huang, D,Tang, Y,Wu, YL,et al. Note on Higgs Decay into Two Photons H -> gamma gamma[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2012,57(3):427-434.
APA Huang, D,Tang, Y,Wu, YL,&Huang, D .(2012).Note on Higgs Decay into Two Photons H -> gamma gamma.COMMUNICATIONS IN THEORETICAL PHYSICS,57(3),427-434.
MLA Huang, D,et al."Note on Higgs Decay into Two Photons H -> gamma gamma".COMMUNICATIONS IN THEORETICAL PHYSICS 57.3(2012):427-434.
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