The Factorisation of the t-channel Pole in Quark-Gluon Scattering

By exploring the scattering of specific helicity states in quark-gluon scattering at tree level we show explicitly that the t-channel pole can be described exactly as a contraction of two local currents. Furthermore, we demonstrate that out of eight non-zero helicity possibilities, only two suppress...

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Detalles Bibliográficos
Autores principales: Andersen, Jeppe R, Smillie, Jennifer M
Lenguaje:eng
Publicado: 2009
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.81.114021
http://cds.cern.ch/record/1215413
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author Andersen, Jeppe R
Smillie, Jennifer M
author_facet Andersen, Jeppe R
Smillie, Jennifer M
author_sort Andersen, Jeppe R
collection CERN
description By exploring the scattering of specific helicity states in quark-gluon scattering at tree level we show explicitly that the t-channel pole can be described exactly as a contraction of two local currents. Furthermore, we demonstrate that out of eight non-zero helicity possibilities, only two suppressed channels have contributions that are not pure, factorised t-channel poles. We thereby extract a gauge-invariant definition for the t-channel current generated by the scattering of a gluon. This offers a slight improvement in the description of gluon scattering in the framework of arXiv:0908.2786 for the prediction of n-jet rates at hadron colliders.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2009
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spelling cern-12154132019-09-30T06:29:59Zdoi:10.1103/PhysRevD.81.114021http://cds.cern.ch/record/1215413engAndersen, Jeppe RSmillie, Jennifer MThe Factorisation of the t-channel Pole in Quark-Gluon ScatteringParticle Physics - PhenomenologyBy exploring the scattering of specific helicity states in quark-gluon scattering at tree level we show explicitly that the t-channel pole can be described exactly as a contraction of two local currents. Furthermore, we demonstrate that out of eight non-zero helicity possibilities, only two suppressed channels have contributions that are not pure, factorised t-channel poles. We thereby extract a gauge-invariant definition for the t-channel current generated by the scattering of a gluon. This offers a slight improvement in the description of gluon scattering in the framework of arXiv:0908.2786 for the prediction of n-jet rates at hadron colliders.arXiv:0910.5113CERN-PH-TH-2009-202oai:cds.cern.ch:12154132009-10-28
spellingShingle Particle Physics - Phenomenology
Andersen, Jeppe R
Smillie, Jennifer M
The Factorisation of the t-channel Pole in Quark-Gluon Scattering
title The Factorisation of the t-channel Pole in Quark-Gluon Scattering
title_full The Factorisation of the t-channel Pole in Quark-Gluon Scattering
title_fullStr The Factorisation of the t-channel Pole in Quark-Gluon Scattering
title_full_unstemmed The Factorisation of the t-channel Pole in Quark-Gluon Scattering
title_short The Factorisation of the t-channel Pole in Quark-Gluon Scattering
title_sort factorisation of the t-channel pole in quark-gluon scattering
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1103/PhysRevD.81.114021
http://cds.cern.ch/record/1215413
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