Quarkonium states in an anisotropic QCD plasma
- Department of Natural Sciences, Baruch College, CUNY, 17 Lexington Ave, New York, New York 10010 (United States)
- Helmholtz Research School, Goethe Universitaet, Max-von-Laue-Str. 1, D-60438 Frankfurt am Main (Germany)
- Department of Mathematics and Science, Pratt Institute, 200 Willoughby Avenue, Brooklyn, New York 11205 (United States)
- Department of Physics, Gettysburg College, Gettysburg, Pennsylvania 17325 (United States)
We consider quarkonium in a hot quantum chromodynamics (QCD) plasma which, due to expansion and nonzero viscosity, exhibits a local anisotropy in momentum space. At short distances the heavy-quark potential is known at tree level from the hard-thermal loop resummed gluon propagator in anisotropic perturbative QCD. The potential at long distances is modeled as a QCD string which is screened at the same scale as the Coulomb field. At asymptotic separation the potential energy is nonzero and inversely proportional to the temperature. We obtain numerical solutions of the three-dimensional Schroedinger equation for this potential. We find that quarkonium binding is stronger at nonvanishing viscosity and expansion rate, and that the anisotropy leads to polarization of the P-wave states.
- OSTI ID:
- 21266348
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 79, Issue 5; Other Information: DOI: 10.1103/PhysRevD.79.054019; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
Similar Records
Light-Front Holographic QCD
Imaginary part of the static gluon propagator in an anisotropic (viscous) QCD plasma
Related Subjects
ANISOTROPY
ASYMPTOTIC SOLUTIONS
B QUARKS
C QUARKS
COULOMB FIELD
GLUONS
NUMERICAL SOLUTION
P WAVES
PERTURBATION THEORY
PLASMA
POLARIZATION
POTENTIAL ENERGY
POTENTIALS
QUANTUM CHROMODYNAMICS
QUARKONIUM
SCHROEDINGER EQUATION
STRING MODELS
T QUARKS
THREE-DIMENSIONAL CALCULATIONS
VISCOSITY