Enhancement of gluonic dissociation of $J/ψ$ in viscous QGP

Details Enhancement of gluonic dissociation of $J/ψ$ in viscous QGP Enhancement of gluonic dissociation of $J/ψ$ in viscous QGP

2001-04-24

arxiv.org/abs/hep-ph/0104241v1

Phys.Rev. C64 (2001) 057901

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages, 1 figure

Scientific paper

10.1103/PhysRevC.64.057901

We have investigated the effect of viscosity on the gluonic dissociation of $J/\psi$ in an equilibrating plasma. Suppression of $J/\psi$ due to gluonic dissociation depend on the temperature and also on the chemical equilibration rate. In an equilibrating plasma, viscosity affects the temperature evolution and also the chemical equilibration rate, requiring both of them to evolve slowly compared to their ideal counter part. For Au+Au collisions at RHIC and LHC energies, gluonic dissociation of $J/\psi$ increases for a viscous plasma. Low $P_T$ $J/\psi$'s are found to be more suppressed due to viscosity than the high $P_T$ ones. Also the effect is more at LHC energy than at RHIC energy.

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