QT resummation in Higgs boson production at the LHC
G. Bozzi
Abstract
When considering the transverse momentum distribution (qT) of the Higgs boson production it is necessary to separate the small qT region (qT << MH) from the medium and large (qT > MH) one, the former being treated by means of resummation techniques of logaritmhically-enhanced contributions and the latter by fixed-order perturbation theory. Then these two approaches have to be consistently matched to avoid double-counting in the intermediate qT region. Here soft gluon resummation is implemented up to NNLL order and the matching to the corresponding NLO perturbative result is performed. Numerical results are shown for the LHC. The main features of the differential distribution turn out to be quite stable with respect to perturbative uncertainties.
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