Transverse-momentum resummation and the spectrum of the Higgs boson at the LHC

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dc.creatorBozzi, G.
dc.creatorCatani, S.
dc.creatorde Florian, D.
dc.creatorGrazzini, M.
dc.date2005-08-05
dc.date.accessioned2026-07-07T10:29:36Z
dc.date.available2026-07-07T10:29:36Z
dc.descriptionWe consider the transverse-momentum (q_T) distribution of generic high-mass systems (lepton pairs, vector bosons, Higgs particles, ....) produced in hadron collisions. At small q_T, we concentrate on the all-order resummation of the logarithmically-enhanced contributions in QCD perturbation theory. We elaborate on the $b$-space resummation formalism and introduce some novel features: the large logarithmic contributions are systematically exponentiated in a process-independent form and, after integration over q_T, they are constrained by perturbative unitarity to give a vanishing contribution to the total cross section. At intermediate and large q_T, resummation is consistently combined with fixed-order perturbative results, to obtain predictions with uniform theoretical accuracy over the entire range of transverse momenta. The formalism is applied to Standard Model Higgs boson production at LHC energies. We combine the most advanced perturbative information available at present for this process: resummation up to next-to-next-to-leading logarithmic accuracy and fixed-order perturbation theory up to next-to-leading order. The results show a high stability with respect to perturbative QCD uncertainties.
dc.description48 pages, 13 postscript figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0508068
dc.identifierhttp://arxiv.org/abs/hep-ph/0508068
dc.identifierNucl.Phys.B737:73-120,2006
dc.identifierdoi:10.1016/j.nuclphysb.2005.12.022
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/177861
dc.subjectHigh Energy Physics - Phenomenology
dc.titleTransverse-momentum resummation and the spectrum of the Higgs boson at the LHC
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