Central exclusive χc,b production at high energy colliders and gluon saturation approach

Central exclusive χc,b production at high energy colliders and gluon saturation approach

The central exclusive production of χc and χb at the LHC, RHIC and Tevatron energies is analyzed, using the recent unintegrated parton distribution (UGDs) functions available in the package TMDlib. Comparison with data is performed, which tests the underlying assumptions basing the theoretical appro...

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Main Authors: F. Kopp, M.B. Gay Ducati, M.V.T. Machado
Format: Article
Language:English
Published: Elsevier 2020-07-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269320302963
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spelling doaj-4b26e0721446469abb42ec6954d8ab142020-11-25T03:17:10ZengElsevierPhysics Letters B0370-26932020-07-01806135492Central exclusive χc,b production at high energy colliders and gluon saturation approachF. Kopp0M.B. Gay Ducati1M.V.T. Machado2High Energy Physics Phenomenology Group, GFPAE IF-UFRGS, Caixa Postal 15051, CEP 91501-970, Porto Alegre, RS, BrazilHigh Energy Physics Phenomenology Group, GFPAE IF-UFRGS, Caixa Postal 15051, CEP 91501-970, Porto Alegre, RS, BrazilCorresponding author.; High Energy Physics Phenomenology Group, GFPAE IF-UFRGS, Caixa Postal 15051, CEP 91501-970, Porto Alegre, RS, BrazilThe central exclusive production of χc and χb at the LHC, RHIC and Tevatron energies is analyzed, using the recent unintegrated parton distribution (UGDs) functions available in the package TMDlib. Comparison with data is performed, which tests the underlying assumptions basing the theoretical approach and it can constrain the unintegrated gluon distribution function at the small-x region. Predictions for LHC energies using recent UGDs based in CCFM formalism are provided. It is explored the underlying uncertainties on this production as the choice for the unintegrated gluon distribution and factorization scale is done. Moreover, based on the parton saturation model for the gluon distribution, analytical expressions for the rapidity distributions are proposed. The prompt production of J/ψ+γ and ϒ+γ is computed for the first time for LHC energies within the very same formalism used for χ production.http://www.sciencedirect.com/science/article/pii/S0370269320302963
collection DOAJ
language English
format Article
sources DOAJ
author F. Kopp
M.B. Gay Ducati
M.V.T. Machado
spellingShingle F. Kopp
M.B. Gay Ducati
M.V.T. Machado
Central exclusive χc,b production at high energy colliders and gluon saturation approach
Physics Letters B
author_facet F. Kopp
M.B. Gay Ducati
M.V.T. Machado
author_sort F. Kopp
title Central exclusive χc,b production at high energy colliders and gluon saturation approach
title_short Central exclusive χc,b production at high energy colliders and gluon saturation approach
title_full Central exclusive χc,b production at high energy colliders and gluon saturation approach
title_fullStr Central exclusive χc,b production at high energy colliders and gluon saturation approach
title_full_unstemmed Central exclusive χc,b production at high energy colliders and gluon saturation approach
title_sort central exclusive χc,b production at high energy colliders and gluon saturation approach
publisher Elsevier
series Physics Letters B
issn 0370-2693
publishDate 2020-07-01
description The central exclusive production of χc and χb at the LHC, RHIC and Tevatron energies is analyzed, using the recent unintegrated parton distribution (UGDs) functions available in the package TMDlib. Comparison with data is performed, which tests the underlying assumptions basing the theoretical approach and it can constrain the unintegrated gluon distribution function at the small-x region. Predictions for LHC energies using recent UGDs based in CCFM formalism are provided. It is explored the underlying uncertainties on this production as the choice for the unintegrated gluon distribution and factorization scale is done. Moreover, based on the parton saturation model for the gluon distribution, analytical expressions for the rapidity distributions are proposed. The prompt production of J/ψ+γ and ϒ+γ is computed for the first time for LHC energies within the very same formalism used for χ production.
url http://www.sciencedirect.com/science/article/pii/S0370269320302963
work_keys_str_mv AT fkopp centralexclusivechcbproductionathighenergycollidersandgluonsaturationapproach
AT mbgayducati centralexclusivechcbproductionathighenergycollidersandgluonsaturationapproach
AT mvtmachado centralexclusivechcbproductionathighenergycollidersandgluonsaturationapproach
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