Anomalous evolution of nonsinglet nucleon structure functions

We calculate the scale dependence of nonsinglet nucleon structure functions. Due to anomalous axial symmetry breaking a large flavour asymmetry of the quark--antiquark sea is generated nonperturbatively. This produces a strong scale dependence of the nonsinglet structure function in an intermediate...

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Detalles Bibliográficos
Autores principales: Ball, Richard D., Barone, Vincenzo, Forte, Stefano, Genovese, Marco
Lenguaje:eng
Publicado: 1994
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/0370-2693(94)91096-0
http://cds.cern.ch/record/260269
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author Ball, Richard D.
Barone, Vincenzo
Forte, Stefano
Genovese, Marco
author_facet Ball, Richard D.
Barone, Vincenzo
Forte, Stefano
Genovese, Marco
author_sort Ball, Richard D.
collection CERN
description We calculate the scale dependence of nonsinglet nucleon structure functions. Due to anomalous axial symmetry breaking a large flavour asymmetry of the quark--antiquark sea is generated nonperturbatively. This produces a strong scale dependence of the nonsinglet structure function in an intermediate range of Q^2. Evolving nonperturbatively a pure valence distribution from an infrared scale we can thus compute F_2^p-F_2^n as measured by the NMC, and give detailed predictions for its Q^2 dependence at fixed x. We also compare our results with Drell--Yan data.
id cern-260269
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1994
record_format invenio
spelling cern-2602692023-03-14T18:59:35Zdoi:10.1016/0370-2693(94)91096-0http://cds.cern.ch/record/260269engBall, Richard D.Barone, VincenzoForte, StefanoGenovese, MarcoAnomalous evolution of nonsinglet nucleon structure functionsParticle Physics - PhenomenologyWe calculate the scale dependence of nonsinglet nucleon structure functions. Due to anomalous axial symmetry breaking a large flavour asymmetry of the quark--antiquark sea is generated nonperturbatively. This produces a strong scale dependence of the nonsinglet structure function in an intermediate range of Q^2. Evolving nonperturbatively a pure valence distribution from an infrared scale we can thus compute F_2^p-F_2^n as measured by the NMC, and give detailed predictions for its Q^2 dependence at fixed x. We also compare our results with Drell--Yan data.We calculate the scale dependence of nonsinglet nucleon structure functions. Due to anomalous axial symmetry breaking alarge flavour asymmetry of the quark-antiquark sea is generated nonperturbatively. This produces a strong scale dependenceof the nonsinglet structure function in an intermediate range of Q 2 . Evolving nonperturbatively a pure valence distributionfrom an infrared scale we can thus compute F 2 p − F 2 n as measured by the NMC, and give detailed predictions for its Q 2 dependence at fixed x . We also compare our results with Drell-Yan data.We calculate the scale dependence of nonsinglet nucleon structure functions. Due to anomalous axial symmetry breaking a large flavour asymmetry of the quark--antiquark sea is generated nonperturbatively. This produces a strong scale dependence of the nonsinglet structure function in an intermediate range of $Q^2$. Evolving nonperturbatively a pure valence distribution from an infrared scale we can thus compute $F_2^p-F_2^n$ as measured by the NMC, and give detailed predictions for its $Q^2$ dependence at fixed $x$. We also compare our results with Drell--Yan data.hep-ph/9403251CERN-TH-7189-94DFTT-02-94CERN-TH-7189-94DFTT-94-2oai:cds.cern.ch:2602691994
spellingShingle Particle Physics - Phenomenology
Ball, Richard D.
Barone, Vincenzo
Forte, Stefano
Genovese, Marco
Anomalous evolution of nonsinglet nucleon structure functions
title Anomalous evolution of nonsinglet nucleon structure functions
title_full Anomalous evolution of nonsinglet nucleon structure functions
title_fullStr Anomalous evolution of nonsinglet nucleon structure functions
title_full_unstemmed Anomalous evolution of nonsinglet nucleon structure functions
title_short Anomalous evolution of nonsinglet nucleon structure functions
title_sort anomalous evolution of nonsinglet nucleon structure functions
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/0370-2693(94)91096-0
http://cds.cern.ch/record/260269
work_keys_str_mv AT ballrichardd anomalousevolutionofnonsingletnucleonstructurefunctions
AT baronevincenzo anomalousevolutionofnonsingletnucleonstructurefunctions
AT fortestefano anomalousevolutionofnonsingletnucleonstructurefunctions
AT genovesemarco anomalousevolutionofnonsingletnucleonstructurefunctions

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