Hypergeometric presentation for one-loop contributing to $H\rightarrow Zγ$

In this paper, new analytic formulas for one-loop contributing to Higgs decay channel $H \rightarrow Zγ$ are presented in terms of hypergeometric functions. The calculations are performed by following the technique for tensor one-loop reduction developed in [A.~I.~Davydychev, Phys.\ Lett.\ B {\bf 263} (1991) 107]. For the first time, one-loop form factors for the decay process are shown which are valid at arbitrary space-time dimension $d$.

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