An infrared singularity in the damping rate for longitudinal gluons in hot QCD

We determine the singularity in $\gamma_l(0)$, the longitudinal damping rate for on-shell gluons with zero momentum in hot QCD. This result shows in particular that $\gamma_l(0)$ is different from $\gamma_t(0)$, the corresponding damping rate for transverse gluons which is known to be finite. The fa...

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Detalles Bibliográficos
Autores principales: Abada, A, Azi, O
Lenguaje:eng
Publicado: 1999
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(99)00959-4
http://cds.cern.ch/record/360465
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author Abada, A
Azi, O
author_facet Abada, A
Azi, O
author_sort Abada, A
collection CERN
description We determine the singularity in $\gamma_l(0)$, the longitudinal damping rate for on-shell gluons with zero momentum in hot QCD. This result shows in particular that $\gamma_l(0)$ is different from $\gamma_t(0)$, the corresponding damping rate for transverse gluons which is known to be finite. The fact that the singularity persists suggests that the hard thermal loop scheme in which the calculation is performed may need to be improved upon.
id cern-360465
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1999
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spelling cern-3604652019-09-30T06:29:59Zdoi:10.1016/S0370-2693(99)00959-4http://cds.cern.ch/record/360465engAbada, AAzi, OAn infrared singularity in the damping rate for longitudinal gluons in hot QCDParticle Physics - PhenomenologyWe determine the singularity in $\gamma_l(0)$, the longitudinal damping rate for on-shell gluons with zero momentum in hot QCD. This result shows in particular that $\gamma_l(0)$ is different from $\gamma_t(0)$, the corresponding damping rate for transverse gluons which is known to be finite. The fact that the singularity persists suggests that the hard thermal loop scheme in which the calculation is performed may need to be improved upon.hep-ph/9807439ENSK-PH-98-02oai:cds.cern.ch:3604651999
spellingShingle Particle Physics - Phenomenology
Abada, A
Azi, O
An infrared singularity in the damping rate for longitudinal gluons in hot QCD
title An infrared singularity in the damping rate for longitudinal gluons in hot QCD
title_full An infrared singularity in the damping rate for longitudinal gluons in hot QCD
title_fullStr An infrared singularity in the damping rate for longitudinal gluons in hot QCD
title_full_unstemmed An infrared singularity in the damping rate for longitudinal gluons in hot QCD
title_short An infrared singularity in the damping rate for longitudinal gluons in hot QCD
title_sort infrared singularity in the damping rate for longitudinal gluons in hot qcd
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/S0370-2693(99)00959-4
http://cds.cern.ch/record/360465
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