Evidence for polarization of gluons in the proton

We discuss the impact of recent high-statistics Relativistic Heavy Ion Collider data on the determination of the gluon polarization in the proton in the context of a global QCD analysis of polarized parton distributions. We find evidence for a nonvanishing polarization of gluons in the region of mom...

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Autores principales: De Florian, D., Sassot, R., Stratmann, M., Vogelsang, W.
Formato: JOUR
Materias:
Budget control
Colliding beam accelerators
Polarization
Gluon polarization
Momentum fraction
Orbital angular momentum
Parton distributions
Proton spins
Relativistic Heavy Ion Collider
Protons
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00319007_v113_n1_p_DeFlorian
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00319007_v113_n1_p_DeFlorian
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spelling todo:paper_00319007_v113_n1_p_DeFlorian2023-10-03T14:42:32Z Evidence for polarization of gluons in the proton De Florian, D. Sassot, R. Stratmann, M. Vogelsang, W. Budget control Colliding beam accelerators Polarization Gluon polarization Momentum fraction Orbital angular momentum Parton distributions Proton spins Relativistic Heavy Ion Collider Protons We discuss the impact of recent high-statistics Relativistic Heavy Ion Collider data on the determination of the gluon polarization in the proton in the context of a global QCD analysis of polarized parton distributions. We find evidence for a nonvanishing polarization of gluons in the region of momentum fraction and at the scales mostly probed by the data. Although information from low momentum fractions is presently lacking, this finding is suggestive of a significant contribution of gluon spin to the proton spin, thereby limiting the amount of orbital angular momentum required to balance the proton spin budget. © 2014 American Physical Society. 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_00319007_v113_n1_p_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 Budget control
Colliding beam accelerators
Polarization
Gluon polarization
Momentum fraction
Orbital angular momentum
Parton distributions
Proton spins
Relativistic Heavy Ion Collider
Protons
spellingShingle Budget control
Colliding beam accelerators
Polarization
Gluon polarization
Momentum fraction
Orbital angular momentum
Parton distributions
Proton spins
Relativistic Heavy Ion Collider
Protons
De Florian, D.
Sassot, R.
Stratmann, M.
Vogelsang, W.
Evidence for polarization of gluons in the proton
topic_facet Budget control
Colliding beam accelerators
Polarization
Gluon polarization
Momentum fraction
Orbital angular momentum
Parton distributions
Proton spins
Relativistic Heavy Ion Collider
Protons
description We discuss the impact of recent high-statistics Relativistic Heavy Ion Collider data on the determination of the gluon polarization in the proton in the context of a global QCD analysis of polarized parton distributions. We find evidence for a nonvanishing polarization of gluons in the region of momentum fraction and at the scales mostly probed by the data. Although information from low momentum fractions is presently lacking, this finding is suggestive of a significant contribution of gluon spin to the proton spin, thereby limiting the amount of orbital angular momentum required to balance the proton spin budget. © 2014 American Physical Society.
format JOUR
author De Florian, D.
Sassot, R.
Stratmann, M.
Vogelsang, W.
author_facet De Florian, D.
Sassot, R.
Stratmann, M.
Vogelsang, W.
author_sort De Florian, D.
title Evidence for polarization of gluons in the proton
title_short Evidence for polarization of gluons in the proton
title_full Evidence for polarization of gluons in the proton
title_fullStr Evidence for polarization of gluons in the proton
title_full_unstemmed Evidence for polarization of gluons in the proton
title_sort evidence for polarization of gluons in the proton
url http://hdl.handle.net/20.500.12110/paper_00319007_v113_n1_p_DeFlorian
work_keys_str_mv AT defloriand evidenceforpolarizationofgluonsintheproton
AT sassotr evidenceforpolarizationofgluonsintheproton
AT stratmannm evidenceforpolarizationofgluonsintheproton
AT vogelsangw evidenceforpolarizationofgluonsintheproton
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