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

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

Research output: Contribution to journalArticle

26 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 languageEnglish
Pages (from-to)621-627
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume659
Issue number3
DOIs
Publication statusPublished - 2008 Jan 24

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quarks
partons
quantum chromodynamics
dissociation
cross sections
energy

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

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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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The thermal width of heavy quarkonia moving in quark-gluon plasma. / Song, Taesoo; Park, Yongjae; Lee, Su Houng; Wong, Cheuk Yin.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 659, No. 3, 24.01.2008, p. 621-627.

Research output: Contribution to journalArticle

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T1 - The thermal width of heavy quarkonia moving in quark-gluon plasma

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AU - Park, Yongjae

AU - Lee, Su Houng

AU - Wong, Cheuk Yin

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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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