Sensitivity of the LHC isolated-γ + jet data to the parton distribution functions of the proton

We study the impact of differential isolated-photon+jet cross sections measured in proton-proton collisions at a center-of-mass energy of √s= 7TeV on the parton distribution functions (PDF) of the proton. Next-to-leading-order perturbative QCD (pQCD) calculations complemented with the NNPDF2.1 parto...

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Asıl Yazarlar: Carminati, L, Costa, G, D'Enterria, D, Koletsou, I, Marchiori, G, Rojo, J, Stockton, M, Tartarelli, F
Materyal Türü: Journal article
Dil:English
Baskı/Yayın Bilgisi: 2013
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author Carminati, L
Costa, G
D'Enterria, D
Koletsou, I
Marchiori, G
Rojo, J
Stockton, M
Tartarelli, F
author_facet Carminati, L
Costa, G
D'Enterria, D
Koletsou, I
Marchiori, G
Rojo, J
Stockton, M
Tartarelli, F
author_sort Carminati, L
collection OXFORD
description We study the impact of differential isolated-photon+jet cross sections measured in proton-proton collisions at a center-of-mass energy of √s= 7TeV on the parton distribution functions (PDF) of the proton. Next-to-leading-order perturbative QCD (pQCD) calculations complemented with the NNPDF2.1 parton densities, and a Bayesian PDF reweighting method are employed. We find that although the current data provide only mild constraints to the parton densities, future γ-jet measurements with reduced experimental uncertainties can improve our knowledge of the gluon density over a wide range of parton fractional momenta x as well as of the quarks at low x. © EPLA, 2013.
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spelling oxford-uuid:978bed5c-4b7d-4ef5-9e9b-9f11dd2ded702022-03-27T00:00:34ZSensitivity of the LHC isolated-γ + jet data to the parton distribution functions of the protonJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:978bed5c-4b7d-4ef5-9e9b-9f11dd2ded70EnglishSymplectic Elements at Oxford2013Carminati, LCosta, GD'Enterria, DKoletsou, IMarchiori, GRojo, JStockton, MTartarelli, FWe study the impact of differential isolated-photon+jet cross sections measured in proton-proton collisions at a center-of-mass energy of √s= 7TeV on the parton distribution functions (PDF) of the proton. Next-to-leading-order perturbative QCD (pQCD) calculations complemented with the NNPDF2.1 parton densities, and a Bayesian PDF reweighting method are employed. We find that although the current data provide only mild constraints to the parton densities, future γ-jet measurements with reduced experimental uncertainties can improve our knowledge of the gluon density over a wide range of parton fractional momenta x as well as of the quarks at low x. © EPLA, 2013.
spellingShingle Carminati, L
Costa, G
D'Enterria, D
Koletsou, I
Marchiori, G
Rojo, J
Stockton, M
Tartarelli, F
Sensitivity of the LHC isolated-γ + jet data to the parton distribution functions of the proton
title Sensitivity of the LHC isolated-γ + jet data to the parton distribution functions of the proton
title_full Sensitivity of the LHC isolated-γ + jet data to the parton distribution functions of the proton
title_fullStr Sensitivity of the LHC isolated-γ + jet data to the parton distribution functions of the proton
title_full_unstemmed Sensitivity of the LHC isolated-γ + jet data to the parton distribution functions of the proton
title_short Sensitivity of the LHC isolated-γ + jet data to the parton distribution functions of the proton
title_sort sensitivity of the lhc isolated γ jet data to the parton distribution functions of the proton
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