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 -> Hg, q (q) over bar -> Hg, and qg -> 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.
Bonciani, R., Degrassi, G., Vicini, A. (2007). Scalar particle contribution to Higgs production via gluon fusion at NLO. JOURNAL OF HIGH ENERGY PHYSICS(11).
Scalar particle contribution to Higgs production via gluon fusion at NLO
DEGRASSI, GIUSEPPE;
2007-01-01
Abstract
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 -> Hg, q (q) over bar -> Hg, and qg -> 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
