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Huang, D; Tang, Y; Wu, YL; Huang, D (reprint author), Chinese Acad Sci, Inst Theoret Phys, KITPC, SKLTP, Beijing 100190, Peoples R China.
Note on Higgs Decay into Two Photons H -> gamma gamma
Source PublicationCOMMUNICATIONS IN THEORETICAL PHYSICS
Language英语
KeywordPreserving Loop Regularization Gauge Fields Boson Decay Renormalization Qfts
AbstractThe 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.
2012
ISSN0253-6102
Volume57Issue:3Pages:427-434
Subject AreaPhysics
Indexed BySCI
Funding OrganizationNational 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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Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/15151
Collection理论物理所科研产出_SCI论文
Corresponding AuthorHuang, D (reprint author), Chinese Acad Sci, Inst Theoret Phys, KITPC, SKLTP, Beijing 100190, Peoples R China.
Recommended Citation
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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