%0 Journal Article
%T Scalar Particle Contribution to Higgs Production via Gluon Fusion at NLO
%A Bonciani
%A R.
%A Degrassi
%A G.
%A Vicini
%A A.
%J High Energy Physics - Phenomenology
%D 2007
%I 
%R 10.1088/1126-6708/2007/11/095
%X We consider the gluon fusion production cross section of a scalar Higgs boson in models where fermion and scalar massive colored particles are present. We report analytic expressions for the matrix elements of $gg\to Hg$, $q\bar{q}\to Hg$, and $qg\to Hq$ processes completing the calculation of the NLO QCD corrections in these extended scenarios. The formulas are written in a complete general case, allowing a flexible use for different theoretical models. Applications of our results to two different models are presented: i) a model in which the SM Higgs sector is augmented by a weak doublet scalar in the $SU(N_c)$ adjoint representation. ii) The MSSM, in the limit of neglecting the gluino contribution to the cross section.
%U http://arxiv.org/abs/0709.4227