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Title: Heavy quarkonium in a holographic QCD model

Abstract

Encouraged by recent developments in AdS/QCD models for the light quark system, we study heavy quarkonium in the framework of the AdS/QCD models. We calculate the masses of cc vector meson states using the AdS/QCD models at zero and at finite temperature. Among the models adopted in this work, we find that the soft-wall model describes the low-lying heavy quark meson states at zero temperature relatively well. At finite temperature, we observe that once the bound state is above T{sub c}, its mass will increase with temperature until it dissociates at a temperature of around 494 MeV. It is shown that the dissociation temperature is fixed by the infrared cutoff of the models. The present model serves as a unified nonperturbative model to investigate the properties of bound quarkonium states above T{sub c}.

Authors:
;  [1];  [2]
  1. School of Physics, Korea Institute for Advanced Study, Seoul 130-722 (Korea, Republic of)
  2. Institute of Physics and Applied Physics, Yonsei University, Seoul 120-749 (Korea, Republic of)
Publication Date:
OSTI Identifier:
20929547
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 11; Other Information: DOI: 10.1103/PhysRevD.75.114008; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; B QUARKS; BOUND STATE; C QUARKS; D QUARKS; HOLOGRAPHY; MASS; MEV RANGE 100-1000; PARTICLE MODELS; QUANTUM CHROMODYNAMICS; QUARKONIUM; T QUARKS; U QUARKS; VECTOR MESONS

Citation Formats

Kim, Youngman, Lee, Jong-Phil, and Lee, Su Houng. Heavy quarkonium in a holographic QCD model. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.75.114008.
Kim, Youngman, Lee, Jong-Phil, & Lee, Su Houng. Heavy quarkonium in a holographic QCD model. United States. doi:10.1103/PHYSREVD.75.114008.
Kim, Youngman, Lee, Jong-Phil, and Lee, Su Houng. Fri . "Heavy quarkonium in a holographic QCD model". United States. doi:10.1103/PHYSREVD.75.114008.
@article{osti_20929547,
title = {Heavy quarkonium in a holographic QCD model},
author = {Kim, Youngman and Lee, Jong-Phil and Lee, Su Houng},
abstractNote = {Encouraged by recent developments in AdS/QCD models for the light quark system, we study heavy quarkonium in the framework of the AdS/QCD models. We calculate the masses of cc vector meson states using the AdS/QCD models at zero and at finite temperature. Among the models adopted in this work, we find that the soft-wall model describes the low-lying heavy quark meson states at zero temperature relatively well. At finite temperature, we observe that once the bound state is above T{sub c}, its mass will increase with temperature until it dissociates at a temperature of around 494 MeV. It is shown that the dissociation temperature is fixed by the infrared cutoff of the models. The present model serves as a unified nonperturbative model to investigate the properties of bound quarkonium states above T{sub c}.},
doi = {10.1103/PHYSREVD.75.114008},
journal = {Physical Review. D, Particles Fields},
number = 11,
volume = 75,
place = {United States},
year = {Fri Jun 01 00:00:00 EDT 2007},
month = {Fri Jun 01 00:00:00 EDT 2007}
}