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 → ∞.