dorsal/arxiv
View SchemaJ/\psi$ Gluonic Dissociation Revisited : III. Effects of Transverse Hydrodynamic Flow
| Authors | B. K. Patra, V. J. Menon |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0512103 |
| URL | https://arxiv.org/abs/nucl-th/0512103 |
| DOI | 10.1140/epjc/s2006-02613-8 |
| Journal | Eur.Phys.J.C48:207-213,2006 |
Abstract
In a recent paper [Eur. Phys. J {\bf C 44}, 567 (2005)] we developed a very general formulation to take into account explicitly the effects of hydrodynamic flow profile on the gluonic breakup of $J/\psi$'s produced in an equilibrating quark-gluon plasma. Here we apply that formulation to the case when the medium is undergoing cylindrically symmetric {\it transverse} expansion starting from RHIC or LHC initial conditions. Our algebraic and numerical estimates demonstrate that the transverse expansion causes enhancement of local gluon number density $\ng$, affects the $\pt$-dependence of the average dissociation rate $\tilg$ through a partial-wave interference mechanism, and makes the survival probability $\spt$ to change with $\pt$ very slowly. Compared to the previous case of longitudinal expansion the new graph of $\spt$ is pushed up at LHC, but develops a rich structure at RHIC, due to a competition between the transverse catch-up time and plasma lifetime.
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"abstract": "In a recent paper [Eur. Phys. J {\\bf C 44}, 567 (2005)] we developed a very\ngeneral formulation to take into account explicitly the effects of hydrodynamic\nflow profile on the gluonic breakup of $J/\\psi$\u0027s produced in an equilibrating\nquark-gluon plasma. Here we apply that formulation to the case when the medium\nis undergoing cylindrically symmetric {\\it transverse} expansion starting from\nRHIC or LHC initial conditions. Our algebraic and numerical estimates\ndemonstrate that the transverse expansion causes enhancement of local gluon\nnumber density $\\ng$, affects the $\\pt$-dependence of the average dissociation\nrate $\\tilg$ through a partial-wave interference mechanism, and makes the\nsurvival probability $\\spt$ to change with $\\pt$ very slowly. Compared to the\nprevious case of longitudinal expansion the new graph of $\\spt$ is pushed up at\nLHC, but develops a rich structure at RHIC, due to a competition between the\ntransverse catch-up time and plasma lifetime.",
"arxiv_id": "nucl-th/0512103",
"authors": [
"B. K. Patra",
"V. J. Menon"
],
"categories": [
"nucl-th"
],
"doi": "10.1140/epjc/s2006-02613-8",
"journal_ref": "Eur.Phys.J.C48:207-213,2006",
"title": "J/\\psi$ Gluonic Dissociation Revisited : III. Effects of Transverse Hydrodynamic Flow",
"url": "https://arxiv.org/abs/nucl-th/0512103"
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