PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS 2021, 093B05 (2021)

ISSN: 2050-3911, SCIE

One-loop W boson contributions to the decay H → Zγ in the general Rξ gauge

Khiem Hong Phan, Le Tho Hue , and Dzung Tri Tran

One-loop W boson contributions to the decay H → Zγ in the general Rξ gauge are presented. The analytical results are expressed in terms of well-known Passarino–Veltman functions such that their numerical evaluations can be generated using LoopTools. In the limit d → 4, we have shown that these analytical results are independent of the unphysical parameter ξ and consistent with previous results. The gauge parameter independence is also checked numerically for consistence. Our results are also well stable with different values of ξ = 0, 1, 100 and ξ → ∞.

DOI: 10.1093/ptep/ptab106

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