Gluon Contributions to Parity-Violating Asymmetries in Polarized Proton-Proton Scattering

We report on a calculation of one-loop weak corrections to polarized quark-gluon scattering and the corresponding crossed channels. Such contributions are suppressed formally by one power of alpha_s relative to W- or Z-mediated quark-quark scattering, but would enable the spin asymmetry of the gluon...

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Detalles Bibliográficos
Autores principales: Ellis, John R., Moretti, Stefano, Ross, Douglas A.
Lenguaje:eng
Publicado: 2001
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1088/1126-6708/2001/06/043
http://cds.cern.ch/record/489388
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author Ellis, John R.
Moretti, Stefano
Ross, Douglas A.
author_facet Ellis, John R.
Moretti, Stefano
Ross, Douglas A.
author_sort Ellis, John R.
collection CERN
description We report on a calculation of one-loop weak corrections to polarized quark-gluon scattering and the corresponding crossed channels. Such contributions are suppressed formally by one power of alpha_s relative to W- or Z-mediated quark-quark scattering, but would enable the spin asymmetry of the gluon distribution to contribute to parity-violating asymmetries that will soon be investigated in polarized proton-proton scattering experiments at RHIC. In certain kinematic regions, gluon contributions to parity-violating asymmetries can be as large as 10% of the tree-level W- and Z-exchanges in quark-quark scattering, but usually only where the parity-violating asymmetries are already small.
id cern-489388
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2001
record_format invenio
spelling cern-4893882023-03-14T20:12:40Zdoi:10.1088/1126-6708/2001/06/043http://cds.cern.ch/record/489388engEllis, John R.Moretti, StefanoRoss, Douglas A.Gluon Contributions to Parity-Violating Asymmetries in Polarized Proton-Proton ScatteringParticle Physics - PhenomenologyWe report on a calculation of one-loop weak corrections to polarized quark-gluon scattering and the corresponding crossed channels. Such contributions are suppressed formally by one power of alpha_s relative to W- or Z-mediated quark-quark scattering, but would enable the spin asymmetry of the gluon distribution to contribute to parity-violating asymmetries that will soon be investigated in polarized proton-proton scattering experiments at RHIC. In certain kinematic regions, gluon contributions to parity-violating asymmetries can be as large as 10% of the tree-level W- and Z-exchanges in quark-quark scattering, but usually only where the parity-violating asymmetries are already small.We report on a calculation of one-loop weak corrections to polarized quark-gluon scattering and the corresponding crossed channels. Such contributions are suppressed formally by one power ofαsrelative toW- orZ-mediated quark-quark scattering, but would enable the spin asymmetry of the gluon distribution to contribute to parity-violating asymmetries that will soon be investigated in polarized proton-proton scattering experiments at RHIC. In certain kinematic regions, gluon contributions to parity-violating asymmetries can be as large as 10% of the tree-levelW- andZ-exchanges in quark-quark scattering, but usually only where the parity-violating asymmetries are already small.hep-ph/0102340CERN-TH-2001-053CERN-TH-2001-053oai:cds.cern.ch:4893882001-02-28
spellingShingle Particle Physics - Phenomenology
Ellis, John R.
Moretti, Stefano
Ross, Douglas A.
Gluon Contributions to Parity-Violating Asymmetries in Polarized Proton-Proton Scattering
title Gluon Contributions to Parity-Violating Asymmetries in Polarized Proton-Proton Scattering
title_full Gluon Contributions to Parity-Violating Asymmetries in Polarized Proton-Proton Scattering
title_fullStr Gluon Contributions to Parity-Violating Asymmetries in Polarized Proton-Proton Scattering
title_full_unstemmed Gluon Contributions to Parity-Violating Asymmetries in Polarized Proton-Proton Scattering
title_short Gluon Contributions to Parity-Violating Asymmetries in Polarized Proton-Proton Scattering
title_sort gluon contributions to parity-violating asymmetries in polarized proton-proton scattering
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1088/1126-6708/2001/06/043
http://cds.cern.ch/record/489388
work_keys_str_mv AT ellisjohnr gluoncontributionstoparityviolatingasymmetriesinpolarizedprotonprotonscattering
AT morettistefano gluoncontributionstoparityviolatingasymmetriesinpolarizedprotonprotonscattering
AT rossdouglasa gluoncontributionstoparityviolatingasymmetriesinpolarizedprotonprotonscattering

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