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

2021/03/26 by Dzung Tri Tran, Tran, Dzung Tri, Hue, Le Tho +2
Engineering · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Superconducting Materials and Applications

paper · pdf · doi:10.48550/arxiv.2103.14248

openalex publication_date 2021/03/26 · openalex created_date 2023/04/27 · openalex updated_date 2026/07/28

Abstract

One-loop W boson contributions to the decay H→ Zγ in the general R_ξ gauge are presented. The analytical results are expressed in terms of well-known Passarino-Veltman functions which their numerical evaluations can be generated using \tt 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 are also checked numerically for consistence. Our results are also well stable with different values of ξ=0, 1, 100, and ξ→ ∞.

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