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.

Scalar particle contribution to Higgs production via gluon fusion at NLO / R. Bonciani, G. Degrassi, A. Vicini. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2007:11(2007 Nov 29), pp. 095.095.1-095.095.21. [10.1088/1126-6708/2007/11/095]

### Scalar particle contribution to Higgs production via gluon fusion at NLO

#### 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 $gg\to Hg$, $q\bar{q}\to Hg$, 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.
##### Scheda breve Scheda completa Scheda completa (DC)
Hadronic colliders; NLO computations; Supersymmetry phenomenology
Settore FIS/02 - Fisica Teorica, Modelli e Metodi Matematici
29-nov-2007
http://www.iop.org/EJ/article/1126-6708/2007/11/095/jhep112007095.pdf?request-id=7b2ac4a8-e9a2-4cc6-87cc-f1f54913a580
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/39412
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