Once more on the Higgs decay into two photons

Abstract

We comment on the recently reiterated claim that the contribution of the W-boson loop to the Higgs boson decay into two photons leads to different expressions in the $R_{\xi }$ gauge and the unitary gauge. By applying a gauge-symmetry preserving regularization with higher-order covariant derivatives we reproduce once again the "classical" gauge-independent result.

6 pages, 1 figure

References in corpus (2)

• Universal dual amplitudes and asymptotic expansions for $gg\to H$ and $H\to \gamma \gamma$ in four dimensions
• Unambiguous cancellation of divergences of $H\to \gamma \gamma$ process via one W loop in unitary gauge: Gauge invariance in Dyson scheme and physical boundary condition

Cited by in corpus (4)

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