Initial energy density and gluon distribution from the glasma in heavy-ion collisions

Journal Article · Sun Feb 15 00:00:00 EST 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.79.024909· OSTI ID:21202728

Fujii, Hirotsugu; Fukushima, Kenji; Hidaka, Yoshimasa ^[1]

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1. Institute of Physics, University of Tokyo, Komaba, Meguro-ku, Tokyo 153-8902 (Japan)

We estimate the energy density and the gluon distribution associated with the classical fields describing the early-time dynamics of heavy-ion collisions. In the McLerran-Venugopalan model, we first decompose the energy density into the momentum components exactly, with the use of the Wilson line correlators. Then we evolve the energy density with the free-field equation, which is justified by the dominance of the ultraviolet modes near the collision point. We also discuss the improvement that occurs with the inclusion of nonlinear terms into the time evolution. Our numerical results at RHIC energy are fairly consistent with the empirical values.

• OSTI ID: 21202728
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 79, Issue 2; Other Information: DOI: 10.1103/PhysRevC.79.024909; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BROOKHAVEN RHIC
COLLISIONS
DISTRIBUTION
ENERGY DENSITY
FIELD EQUATIONS
GLUONS
HEAVY ION REACTIONS
NONLINEAR PROBLEMS
SIMULATION
ULTRAVIOLET RADIATION