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Title: Hadronic modes and quark properties in the quark-gluon plasma

Abstract

Based on interaction potentials between a heavy quark and antiquark as extracted from recent QCD lattice calculations, we set up a Brueckner-type many-body scheme to study the properties of light (anti-) quarks in a quark-gluon plasma at moderate temperatures, T{approx_equal} 1-2 T{sub c}. The quark-antiquark T matrix, including both color-singlet and color-octet channels, and corresponding quark self-energies and spectral functions are calculated self-consistently. The repulsive octet potential induces quasiparticle masses of up to 150 MeV, whereas the attractive color-singlet part generates resonance structures in the q-q T matrix, which in turn lead to quasiparticle widths of {approx_equal} 200 MeV. This corresponds to scattering rates of {approx_equal} 1 fm{sup -1} and may reflect liquid-like properties of the system.

Authors:
;  [1]
  1. Cyclotron Institute and Physics Department, Texas A and M University, College Station, Texas 77843-3366 (United States)
Publication Date:
OSTI Identifier:
20771134
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 72; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevC.72.064905; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; B QUARKS; C QUARKS; COLOR MODEL; HEAVY ION REACTIONS; LATTICE FIELD THEORY; MANY-BODY PROBLEM; MEV RANGE; PARTICLE WIDTHS; QUANTUM CHROMODYNAMICS; QUARK MATTER; RESONANCE PARTICLES; S MATRIX; SCATTERING; SELF-ENERGY; SPECTRAL FUNCTIONS; T QUARKS

Citation Formats

Mannarelli, M., and Rapp, R. Hadronic modes and quark properties in the quark-gluon plasma. United States: N. p., 2005. Web. doi:10.1103/PhysRevC.72.064905.
Mannarelli, M., & Rapp, R. Hadronic modes and quark properties in the quark-gluon plasma. United States. doi:10.1103/PhysRevC.72.064905.
Mannarelli, M., and Rapp, R. Thu . "Hadronic modes and quark properties in the quark-gluon plasma". United States. doi:10.1103/PhysRevC.72.064905.
@article{osti_20771134,
title = {Hadronic modes and quark properties in the quark-gluon plasma},
author = {Mannarelli, M. and Rapp, R.},
abstractNote = {Based on interaction potentials between a heavy quark and antiquark as extracted from recent QCD lattice calculations, we set up a Brueckner-type many-body scheme to study the properties of light (anti-) quarks in a quark-gluon plasma at moderate temperatures, T{approx_equal} 1-2 T{sub c}. The quark-antiquark T matrix, including both color-singlet and color-octet channels, and corresponding quark self-energies and spectral functions are calculated self-consistently. The repulsive octet potential induces quasiparticle masses of up to 150 MeV, whereas the attractive color-singlet part generates resonance structures in the q-q T matrix, which in turn lead to quasiparticle widths of {approx_equal} 200 MeV. This corresponds to scattering rates of {approx_equal} 1 fm{sup -1} and may reflect liquid-like properties of the system.},
doi = {10.1103/PhysRevC.72.064905},
journal = {Physical Review. C, Nuclear Physics},
number = 6,
volume = 72,
place = {United States},
year = {Thu Dec 15 00:00:00 EST 2005},
month = {Thu Dec 15 00:00:00 EST 2005}
}