The structure of large logarithmic corrections at small transverse momentum in hadronic collisions

We consider the region of small transverse momenta in the production of high-mass systems in hadronic collisions. By using the current knowledge on the infrared behaviour of tree-level and one-loop QCD amplitudes at O(αS 2), we analytically compute the general form of the logarithmically-enhanced co...

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Autores principales: De Florian, D., Grazzini, M.
Formato: JOUR
Materias:
12.38.Bx
12.38.Cy
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_05503213_v616_n1-2_p247_DeFlorian
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_05503213_v616_n1-2_p247_DeFlorian2023-10-03T15:34:17Z The structure of large logarithmic corrections at small transverse momentum in hadronic collisions De Florian, D. Grazzini, M. 12.38.Bx 12.38.Cy We consider the region of small transverse momenta in the production of high-mass systems in hadronic collisions. By using the current knowledge on the infrared behaviour of tree-level and one-loop QCD amplitudes at O(αS 2), we analytically compute the general form of the logarithmically-enhanced contributions up to next-to-next-to-leading logarithmic accuracy. By comparing the results with qT-resummation formulae we extract the coefficients that control the resummation of the large logarithmic contributions for both quark and gluon channels. Our results show that within the conventional resummation formalism the Sudakov form factor is actually process-dependent. 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_05503213_v616_n1-2_p247_DeFlorian
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic 12.38.Bx
12.38.Cy
spellingShingle 12.38.Bx
12.38.Cy
De Florian, D.
Grazzini, M.
The structure of large logarithmic corrections at small transverse momentum in hadronic collisions
topic_facet 12.38.Bx
12.38.Cy
description We consider the region of small transverse momenta in the production of high-mass systems in hadronic collisions. By using the current knowledge on the infrared behaviour of tree-level and one-loop QCD amplitudes at O(αS 2), we analytically compute the general form of the logarithmically-enhanced contributions up to next-to-next-to-leading logarithmic accuracy. By comparing the results with qT-resummation formulae we extract the coefficients that control the resummation of the large logarithmic contributions for both quark and gluon channels. Our results show that within the conventional resummation formalism the Sudakov form factor is actually process-dependent.
format JOUR
author De Florian, D.
Grazzini, M.
author_facet De Florian, D.
Grazzini, M.
author_sort De Florian, D.
title The structure of large logarithmic corrections at small transverse momentum in hadronic collisions
title_short The structure of large logarithmic corrections at small transverse momentum in hadronic collisions
title_full The structure of large logarithmic corrections at small transverse momentum in hadronic collisions
title_fullStr The structure of large logarithmic corrections at small transverse momentum in hadronic collisions
title_full_unstemmed The structure of large logarithmic corrections at small transverse momentum in hadronic collisions
title_sort structure of large logarithmic corrections at small transverse momentum in hadronic collisions
url http://hdl.handle.net/20.500.12110/paper_05503213_v616_n1-2_p247_DeFlorian
work_keys_str_mv AT defloriand thestructureoflargelogarithmiccorrectionsatsmalltransversemomentuminhadroniccollisions
AT grazzinim thestructureoflargelogarithmiccorrectionsatsmalltransversemomentuminhadroniccollisions
AT defloriand structureoflargelogarithmiccorrectionsatsmalltransversemomentuminhadroniccollisions
AT grazzinim structureoflargelogarithmiccorrectionsatsmalltransversemomentuminhadroniccollisions
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