Heavy quark diffusion with relativistic Langevin dynamics in the quark-gluon fluid
- Department of Physics, University of Tokyo, Tokyo 113-0033 (Japan)
The relativistic diffusion process of heavy quarks is formulated on the basis of the relativistic Langevin equation in Ito discretization scheme. The drag force inside the quark-gluon plasma (QGP) is parametrized according to the formula for the strongly coupled plasma obtained by the anti-de-Sitter space/conformal field theory (AdS/CFT) correspondence. The diffusion dynamics of charm and bottom quarks in QGP is described by combining the Langevin simulation under the background matter described by the relativistic hydrodynamics. Theoretical calculations of the nuclear modification factor R{sub AA} and the elliptic flow v{sub 2} for the single electrons from the charm and bottom decays are compared with the experimental data from the relativistic heavy-ion collisions. The R{sub AA} for electrons with large transverse momentum (p{sub T}>3 GeV) indicates that the drag force from the QGP is as strong as the AdS/CFT prediction.
- OSTI ID:
- 21293728
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 79, Issue 5; Other Information: DOI: 10.1103/PhysRevC.79.054907; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ANTI DE SITTER SPACE
B QUARKS
C QUARKS
CONFORMAL INVARIANCE
ELECTRONS
FORECASTING
GEV RANGE 01-10
GLUONS
HEAVY ION REACTIONS
HYDRODYNAMIC MODEL
LANGEVIN EQUATION
MODIFICATIONS
QUANTUM FIELD THEORY
QUARK MATTER
RELATIVISTIC RANGE
STRING MODELS
T QUARKS
TRANSVERSE MOMENTUM