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

Mostrar todas las versiones(3)

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...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Bozzi, G., Catani, S., De Florian, D., Grazzini, M.
Formato:	JOUR
Materias:	accuracy article calculation elementary particle oscillation quantum mechanics spectrum theory
Acceso en línea:	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	todo:paper_03702693_v564_n1-2_p65_Bozzi
record_format	dspace
spelling	todo:paper_03702693_v564_n1-2_p65_Bozzi2023-10-03T15:28:53Z The qT spectrum of the Higgs boson at the LHC in QCD perturbation theory Bozzi, G. Catani, S. De Florian, D. Grazzini, M. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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 Bozzi, G. Catani, S. De Florian, D. Grazzini, M. 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.
format	JOUR
author	Bozzi, G. Catani, S. De Florian, D. Grazzini, M.
author_facet	Bozzi, G. Catani, S. De Florian, D. Grazzini, M.
author_sort	Bozzi, G.
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
url	http://hdl.handle.net/20.500.12110/paper_03702693_v564_n1-2_p65_Bozzi
work_keys_str_mv	AT bozzig theqtspectrumofthehiggsbosonatthelhcinqcdperturbationtheory AT catanis theqtspectrumofthehiggsbosonatthelhcinqcdperturbationtheory AT defloriand theqtspectrumofthehiggsbosonatthelhcinqcdperturbationtheory AT grazzinim theqtspectrumofthehiggsbosonatthelhcinqcdperturbationtheory AT bozzig qtspectrumofthehiggsbosonatthelhcinqcdperturbationtheory AT catanis qtspectrumofthehiggsbosonatthelhcinqcdperturbationtheory AT defloriand qtspectrumofthehiggsbosonatthelhcinqcdperturbationtheory AT grazzinim qtspectrumofthehiggsbosonatthelhcinqcdperturbationtheory
_version_	1782029233321672704

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

Ejemplares similares