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

We consider the transverse-momentum (qT) distribution of generic high-mass systems (lepton pairs, vector bosons, Higgs particles,...) produced in hadron collisions. At small qT, we concentrate on the all-order resummation of the logarithmically-enhanced contributions in QCD perturbation theory. We e...

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Autor principal: de Florian, Daniel Enrique
Publicado: 2006
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05503213_v737_n1-2_p73_Bozzi
http://hdl.handle.net/20.500.12110/paper_05503213_v737_n1-2_p73_Bozzi
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_05503213_v737_n1-2_p73_Bozzi
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spelling paper:paper_05503213_v737_n1-2_p73_Bozzi2023-06-08T15:41:20Z Transverse-momentum resummation and the spectrum of the Higgs boson at the LHC de Florian, Daniel Enrique We consider the transverse-momentum (qT) distribution of generic high-mass systems (lepton pairs, vector bosons, Higgs particles,...) produced in hadron collisions. At small qT, 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 qT, they are constrained by perturbative unitarity to give a vanishing contribution to the total cross section. At intermediate and large qT, 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. © 2005 Elsevier B.V. All rights reserved. Fil:de Florian, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2006 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05503213_v737_n1-2_p73_Bozzi http://hdl.handle.net/20.500.12110/paper_05503213_v737_n1-2_p73_Bozzi
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description We consider the transverse-momentum (qT) distribution of generic high-mass systems (lepton pairs, vector bosons, Higgs particles,...) produced in hadron collisions. At small qT, 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 qT, they are constrained by perturbative unitarity to give a vanishing contribution to the total cross section. At intermediate and large qT, 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. © 2005 Elsevier B.V. All rights reserved.
author de Florian, Daniel Enrique
spellingShingle de Florian, Daniel Enrique
Transverse-momentum resummation and the spectrum of the Higgs boson at the LHC
author_facet de Florian, Daniel Enrique
author_sort de Florian, Daniel Enrique
title Transverse-momentum resummation and the spectrum of the Higgs boson at the LHC
title_short Transverse-momentum resummation and the spectrum of the Higgs boson at the LHC
title_full Transverse-momentum resummation and the spectrum of the Higgs boson at the LHC
title_fullStr Transverse-momentum resummation and the spectrum of the Higgs boson at the LHC
title_full_unstemmed Transverse-momentum resummation and the spectrum of the Higgs boson at the LHC
title_sort transverse-momentum resummation and the spectrum of the higgs boson at the lhc
publishDate 2006
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05503213_v737_n1-2_p73_Bozzi
http://hdl.handle.net/20.500.12110/paper_05503213_v737_n1-2_p73_Bozzi
work_keys_str_mv AT defloriandanielenrique transversemomentumresummationandthespectrumofthehiggsbosonatthelhc
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