Charmonium production in relativistic heavy-ion collisions

Journal Article · Thu Sep 15 00:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.84.034907· OSTI ID:21596776

Song, Taesoo ^[1]; Han, Kyong Chol; Ko, Che Ming ^[2]

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1. Cyclotron Institute, Texas A and M University, College Station, Texas 77843-3366 (United States)
2. Cyclotron Institute and Department of Physics and Astronomy, Texas A and M University, College Station, Texas 77843-3366 (United States)

Using the two-component model that includes charmonium production from both initial nucleon-nucleon hard scattering and regeneration in the produced quark-gluon plasma, we study J/{psi} production in heavy-ion collisions at the Super Proton Synchrotron (SPS), Relativistic Heavy Ion Collider (RHIC), and Large Hadron Collider (LHC). For the expansion dynamics of produced hot dense matter, we use a schematic viscous hydrodynamic model with the specific shear viscosity in the quark-gluon plasma and the hadronic matter taken, respectively, to be two and ten times the lower bound of 1/4{pi} suggested by the anti-de Sitter/conformal field theory (AdS/CFT) correspondence. For the initial dissociation and the subsequent thermal decay of charmonia in the hot dense matter, we use the screened Cornell potential to describe the properties of charmonia and perturbative QCD to calculate their dissociation cross sections. Including regeneration of charmonia in the quark-gluon plasma via a kinetic equation with in-medium chamonium decay widths, we obtain a good description of measured J/{psi} nuclear modification factors in Pb + Pb collisions at {radical}(s{sub NN})=1.73 GeV at SPS and in Au + Au collisions at {radical}(s{sub NN})=200 GeV at RHIC. A reasonable description of the measured nuclear modification factor of high transverse momenta J/{psi} in Pb + Pb collisions at {radical}(s{sub NN})=2.76 TeV at LHC is also obtained.

• OSTI ID: 21596776
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 84, Issue 3; Other Information: DOI: 10.1103/PhysRevC.84.034907; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANTI DE SITTER GROUP
BROOKHAVEN RHIC
CERN LHC
CHARMONIUM
COLLISIONS
CONFORMAL INVARIANCE
CROSS SECTIONS
GEV RANGE 100-1000
HEAVY ION REACTIONS
HYDRODYNAMIC MODEL
KINETIC EQUATIONS
PARTICLE DECAY
PROTONS
QUANTUM CHROMODYNAMICS
QUARK MATTER
RELATIVISTIC RANGE
SCATTERING
TEV RANGE 01-10
TRANSVERSE MOMENTUM
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BARYONS
BOSONS
CYCLIC ACCELERATORS
DECAY
ELEMENTARY PARTICLES
ENERGY RANGE
EQUATIONS
FERMIONS
FIELD THEORIES
GEV RANGE
HADRONS
HEAVY ION ACCELERATORS
INVARIANCE PRINCIPLES
LIE GROUPS
LINEAR MOMENTUM
MATHEMATICAL MODELS
MATTER
MESONS
NUCLEAR REACTIONS
NUCLEONS
PARTICLE MODELS
QUANTUM FIELD THEORY
QUARKONIUM
STATISTICAL MODELS
STORAGE RINGS
SYMMETRY GROUPS
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