Two -loop $O(G_F{M_H}^2)$ radiative corrections to the Higgs decay width $H \to γγ$ for large Higgs boson masses

Details Two -loop $O(G_F{M_H}^2)$ radiative corrections to the Higgs decay width $H \to γγ$ for large Higgs boson masses Two -loop $O(G_F{M_H}^2)$ radiative corrections to the Higgs decay width $H \to γγ$ for large Higgs boson masses

1995-08-21

arxiv.org/abs/hep-ph/9508334v1

Phys.Rev. D53 (1996) 3737-3745

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, 7 uuencoded figures

Scientific paper

10.1103/PhysRevD.53.3737

This note is devoted to the calculation of the two-loop $O(G_F {M_H}^2)$ radiative corrections to the Higgs decay width $H \to \gamma \gamma $ for large values of the Higgs boson mass $M_H$ within the Minimal Standard Model. The use of the Equivalence Theorem makes it possible to reduce the problem to the consideration of the physical Higgs boson field and the Goldstone bosons $w^{+},w^{-},z$. We present analytical results for the various two- and three-particle absorptive parts of two-loop contributions, using dispersive techniques, analytic results for all but one of the dispersive contributions. The typical size of the correction is $\sim ~30 $ percent for a Higgs boson mass of order $1~TeV$.

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