A potential infrared problem with the damping rates for gluons with soft momentum in hot QCD

A. Abada; O. Azi; K. Benchallal

doi:10.1016/S0370-2693(98)00221-4

A potential infrared problem with the damping rates for gluons with soft momentum in hot QCD

A. Abada
, O. Azi
, K. Benchallal

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

We calculate the damping rate y_l for longitudinal gluons with zero momentum in high-temperature QCD and show that some of its contributing terms are infrared divergent. This is in contrast with the expectation that this damping rate is to be equal to the corresponding one y_t for transverse gluons which is known to be finite. Our calculation was motivated by the fact that similar divergent terms occur when we calculated in a previous work y_t to order p², p being the momentum of the gluon. After we present our results, we briefly discuss them.

Original language	English
Pages (from-to)	158-165
Number of pages	8
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	425
Issue number	1-2
DOIs	https://doi.org/10.1016/S0370-2693(98)00221-4
Publication status	Published - Apr 16 1998
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/S0370-2693(98)00221-4

Cite this

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abstract = "We calculate the damping rate yl for longitudinal gluons with zero momentum in high-temperature QCD and show that some of its contributing terms are infrared divergent. This is in contrast with the expectation that this damping rate is to be equal to the corresponding one yt for transverse gluons which is known to be finite. Our calculation was motivated by the fact that similar divergent terms occur when we calculated in a previous work yt to order p2, p being the momentum of the gluon. After we present our results, we briefly discuss them.",

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T1 - A potential infrared problem with the damping rates for gluons with soft momentum in hot QCD

AU - Abada, A.

AU - Azi, O.

AU - Benchallal, K.

PY - 1998/4/16

Y1 - 1998/4/16

N2 - We calculate the damping rate yl for longitudinal gluons with zero momentum in high-temperature QCD and show that some of its contributing terms are infrared divergent. This is in contrast with the expectation that this damping rate is to be equal to the corresponding one yt for transverse gluons which is known to be finite. Our calculation was motivated by the fact that similar divergent terms occur when we calculated in a previous work yt to order p2, p being the momentum of the gluon. After we present our results, we briefly discuss them.

AB - We calculate the damping rate yl for longitudinal gluons with zero momentum in high-temperature QCD and show that some of its contributing terms are infrared divergent. This is in contrast with the expectation that this damping rate is to be equal to the corresponding one yt for transverse gluons which is known to be finite. Our calculation was motivated by the fact that similar divergent terms occur when we calculated in a previous work yt to order p2, p being the momentum of the gluon. After we present our results, we briefly discuss them.

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UR - https://www.scopus.com/pages/publications/0346499898#tab=citedBy

U2 - 10.1016/S0370-2693(98)00221-4

DO - 10.1016/S0370-2693(98)00221-4

M3 - Article

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JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-2

ER -

A potential infrared problem with the damping rates for gluons with soft momentum in hot QCD

Abstract

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