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...
| Autores: | ; ; ; |
|---|---|
| Tipo de documento: | Artículo |
| Estado: | Published version |
| Fecha de publicación: | 2003 |
| País: | Argentina |
| Institución: | UBA-FCEN |
| Repositorio: | Biblioteca Digital (UBA-FCEN) |
| Lenguaje: | Inglés |
| OAI Identifier: | paperaa:paper_03702693_v564_n1-2_p65_Bozzi |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_03702693_v564_n1-2_p65_Bozzi |
| Nivel de acceso: | Acceso abierto |
| Palabra clave: | accuracy article calculation elementary particle oscillation quantum mechanics spectrum theory |
| _version_ | 1878403833016614912 |
|---|---|
| author | Bozzi, G. |
| author2 | Catani, S. De Florian, D. Grazzini, M. |
| author2_role | author author author |
| author_browse | Bozzi, G. Catani, S. De Florian, D. Grazzini, M. |
| author_facet | Bozzi, G. Catani, S. De Florian, D. Grazzini, M. |
| author_role | author |
| collection | Biblioteca Digital (UBA-FCEN) |
| 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. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | AR_c8c7e5a42e1f9987389d01b4a14c2379 |
| institution | UBA-FCEN |
| instname_str | Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales |
| language | eng |
| network_acronym_str | AR |
| network_name_str | Argentina |
| oai_identifier_str | paperaa:paper_03702693_v564_n1-2_p65_Bozzi |
| publishDate | 2003 |
| publishDateSort | 2003 |
| reponame_str | Biblioteca Digital (UBA-FCEN) |
| spelling | 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. http://hdl.handle.net/20.500.12110/paper_03702693_v564_n1-2_p65_Bozzi |
| spellingShingle | The qT spectrum of the Higgs boson at the LHC in QCD perturbation theory Bozzi, G. accuracy article calculation elementary particle oscillation quantum mechanics spectrum theory |
| status_str | publishedVersion |
| title | 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_short | The qT spectrum of the Higgs boson at the LHC in QCD perturbation theory |
| title_sort | The qT spectrum of the Higgs boson at the LHC in QCD perturbation theory |
| topic | accuracy article calculation elementary particle oscillation quantum mechanics spectrum theory |
| topic_facet | accuracy article calculation elementary particle oscillation quantum mechanics spectrum theory |
| url | http://hdl.handle.net/20.500.12110/paper_03702693_v564_n1-2_p65_Bozzi |