The qT spectrum of the Higgs boson at the LHC in QCD perturbation theory

We consider the transverse-momentum (qT) distribution of Higgs bosons produced at hadron colliders. We use a formalism that uniformly treats both the small-qT and large-qT regions in QCD perturbation theory. At small qT (qT ≪ MH, MH being the mass of the Higgs boson), we implement an all-order resum...

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Detalles Bibliográficos
Autor principal:	de Florian, Daniel Enrique
Publicado:	2003
Materias:	accuracy article calculation elementary particle oscillation quantum mechanics spectrum theory
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v564_n1-2_p65_Bozzi http://hdl.handle.net/20.500.12110/paper_03702693_v564_n1-2_p65_Bozzi
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_03702693_v564_n1-2_p65_Bozzi
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spelling	paper:paper_03702693_v564_n1-2_p65_Bozzi2023-06-08T15:36:40Z The qT spectrum of the Higgs boson at the LHC in QCD perturbation theory de Florian, Daniel Enrique accuracy article calculation elementary particle oscillation quantum mechanics spectrum theory We consider the transverse-momentum (qT) distribution of Higgs bosons produced at hadron colliders. We use a formalism that uniformly treats both the small-qT and large-qT regions in QCD perturbation theory. At small qT (qT ≪ MH, MH being the mass of the Higgs boson), we implement an all-order resummation of logarithmically-enhanced contributions up to next-to-next-to-leading logarithmic accuracy. At large qT (qT ≳ MH), we use fixed-order perturbation theory up to next-to-leading order. The resummed and fixed-order approaches are consistently matched by avoiding double-counting in the intermediate-qT region. In this region, the introduction of unjustified higher-order terms is avoided by imposing unitarity constraints, so that the integral of the qT spectrum exactly reproduces the perturbative result for the total cross section up to next-to-next-to-leading order. Numerical results at the LHC are presented. These show that the main features of the qT distribution are quite stable with respect to perturbative QCD uncertainties. © 2003 Elsevier Science B.V. All rights reserved. Fil:De Florian, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2003 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v564_n1-2_p65_Bozzi http://hdl.handle.net/20.500.12110/paper_03702693_v564_n1-2_p65_Bozzi
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	accuracy article calculation elementary particle oscillation quantum mechanics spectrum theory
spellingShingle	accuracy article calculation elementary particle oscillation quantum mechanics spectrum theory de Florian, Daniel Enrique The qT spectrum of the Higgs boson at the LHC in QCD perturbation theory
topic_facet	accuracy article calculation elementary particle oscillation quantum mechanics spectrum theory
description	We consider the transverse-momentum (qT) distribution of Higgs bosons produced at hadron colliders. We use a formalism that uniformly treats both the small-qT and large-qT regions in QCD perturbation theory. At small qT (qT ≪ MH, MH being the mass of the Higgs boson), we implement an all-order resummation of logarithmically-enhanced contributions up to next-to-next-to-leading logarithmic accuracy. At large qT (qT ≳ MH), we use fixed-order perturbation theory up to next-to-leading order. The resummed and fixed-order approaches are consistently matched by avoiding double-counting in the intermediate-qT region. In this region, the introduction of unjustified higher-order terms is avoided by imposing unitarity constraints, so that the integral of the qT spectrum exactly reproduces the perturbative result for the total cross section up to next-to-next-to-leading order. Numerical results at the LHC are presented. These show that the main features of the qT distribution are quite stable with respect to perturbative QCD uncertainties. © 2003 Elsevier Science B.V. All rights reserved.
author	de Florian, Daniel Enrique
author_facet	de Florian, Daniel Enrique
author_sort	de Florian, Daniel Enrique
title	The qT spectrum of the Higgs boson at the LHC in QCD perturbation theory
title_short	The qT spectrum of the Higgs boson at the LHC in QCD perturbation theory
title_full	The qT spectrum of the Higgs boson at the LHC in QCD perturbation theory
title_fullStr	The qT spectrum of the Higgs boson at the LHC in QCD perturbation theory
title_full_unstemmed	The qT spectrum of the Higgs boson at the LHC in QCD perturbation theory
title_sort	qt spectrum of the higgs boson at the lhc in qcd perturbation theory
publishDate	2003
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v564_n1-2_p65_Bozzi http://hdl.handle.net/20.500.12110/paper_03702693_v564_n1-2_p65_Bozzi
work_keys_str_mv	AT defloriandanielenrique theqtspectrumofthehiggsbosonatthelhcinqcdperturbationtheory AT defloriandanielenrique qtspectrumofthehiggsbosonatthelhcinqcdperturbationtheory
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The qT spectrum of the Higgs boson at the LHC in QCD perturbation theory

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