Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-11-20
JHEP 0701:021,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
19 pages, 3 figures, version accepted by JHEP
Scientific paper
10.1088/1126-6708/2007/01/021
We consider the production of a Higgs boson via gluon-fusion and its decay into two photons. We compute the NLO virtual QCD corrections to these processes in a general framework in which the coupling of the Higgs boson to the external particles is mediated by a colored fermion and a colored scalar. We present compact analytic results for these two-loop corrections that are expressed in terms of Harmonic Polylogarithms. The expansion of these corrections in the low and high Higgs mass regimes, as well as the expression of the new Master Integrals which appear in the reduction of the two-loop amplitudes, are also provided. For the fermionic contribution, we provide an independent check of the results already present in the literature concerning the Higgs boson and the production and decay of a pseudoscalar particle.
Aglietti Ugo
Bonciani R.
Degrassi Giuseppe
Vicini Alessandro
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