The thermal width of heavy quarkonia moving in quark-gluon plasma

Taesoo Song; Yongjae Park; Su Houng Lee; Cheuk Yin Wong

doi:10.1016/j.physletb.2007.11.084

The thermal width of heavy quarkonia moving in quark-gluon plasma

Taesoo Song, Yongjae Park, Su Houng Lee, Cheuk Yin Wong

Department of Physics

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

31 Citations (Scopus)

Abstract

The velocity dependence of the thermal width of heavy quarkonia traveling with respect to the quark-gluon plasma is calculated up to the NLO in perturbative QCD. At the LO, the width decreases with increasing speed, whereas at the NLO it increases with a magnitude approximately proportional to the expectation value of the relative velocity between the quarkonium and a parton in thermal equilibrium. Such an asymptotic behavior is due to the NLO dissociation cross section converging to a nonvanishing value in the high energy limit.

Original language	English
Pages (from-to)	621-627
Number of pages	7
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	659
Issue number	3
DOIs	https://doi.org/10.1016/j.physletb.2007.11.084
Publication status	Published - 2008 Jan 24

Bibliographical note

Funding Information:
This work was supported by the Korea Research Foundation KRF-2006-C00011.

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/j.physletb.2007.11.084

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abstract = "The velocity dependence of the thermal width of heavy quarkonia traveling with respect to the quark-gluon plasma is calculated up to the NLO in perturbative QCD. At the LO, the width decreases with increasing speed, whereas at the NLO it increases with a magnitude approximately proportional to the expectation value of the relative velocity between the quarkonium and a parton in thermal equilibrium. Such an asymptotic behavior is due to the NLO dissociation cross section converging to a nonvanishing value in the high energy limit.",

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AU - Song, Taesoo

AU - Park, Yongjae

AU - Lee, Su Houng

AU - Wong, Cheuk Yin

N1 - Funding Information: This work was supported by the Korea Research Foundation KRF-2006-C00011.

PY - 2008/1/24

Y1 - 2008/1/24

N2 - The velocity dependence of the thermal width of heavy quarkonia traveling with respect to the quark-gluon plasma is calculated up to the NLO in perturbative QCD. At the LO, the width decreases with increasing speed, whereas at the NLO it increases with a magnitude approximately proportional to the expectation value of the relative velocity between the quarkonium and a parton in thermal equilibrium. Such an asymptotic behavior is due to the NLO dissociation cross section converging to a nonvanishing value in the high energy limit.

AB - The velocity dependence of the thermal width of heavy quarkonia traveling with respect to the quark-gluon plasma is calculated up to the NLO in perturbative QCD. At the LO, the width decreases with increasing speed, whereas at the NLO it increases with a magnitude approximately proportional to the expectation value of the relative velocity between the quarkonium and a parton in thermal equilibrium. Such an asymptotic behavior is due to the NLO dissociation cross section converging to a nonvanishing value in the high energy limit.

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The thermal width of heavy quarkonia moving in quark-gluon plasma

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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