dorsal/arxiv
View SchemaEffects of jet quenching on the hydrodynamical evolution of quark-gluon plasma
| Authors | A. K. Chaudhuri, Ulrich W. Heinz |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0503028 |
| URL | https://arxiv.org/abs/nucl-th/0503028 |
| DOI | 10.1103/PhysRevLett.97.062301 |
| Journal | Phys.Rev.Lett.97:062301,2006 |
Abstract
We study the effects of jet quenching on the hydrodynamical evolution of the quark-gluon plasma (QGP) fluid created in a heavy-ion collision. In jet quenching, a hard QCD parton, before fragmenting into a jet of hadrons, deposits a fraction of its energy in the medium, leading to suppressed production of high-pT hadrons. Assuming that the deposited energy quickly thermalizes, we simulate the subsequent hydrodynamic evolution of the QGP fluid. For partons moving at supersonic speed, v_p > c_s, and sufficiently large energy loss, a shock wave forms leading to conical flow [1]. The PHENIX Collaboration recently suggested that observed structures in the azimuthal angle distribution [2] might be caused by conical flow. We show here that conical flow produces different angular structures than predicted in [1] and that, for phenomenologically acceptable values of parton energy loss, conical flow effects are too weak to explain the structures seen by PHENIX [2].
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"abstract": "We study the effects of jet quenching on the hydrodynamical evolution of the\nquark-gluon plasma (QGP) fluid created in a heavy-ion collision. In jet\nquenching, a hard QCD parton, before fragmenting into a jet of hadrons,\ndeposits a fraction of its energy in the medium, leading to suppressed\nproduction of high-pT hadrons. Assuming that the deposited energy quickly\nthermalizes, we simulate the subsequent hydrodynamic evolution of the QGP\nfluid. For partons moving at supersonic speed, v_p \u003e c_s, and sufficiently\nlarge energy loss, a shock wave forms leading to conical flow [1]. The PHENIX\nCollaboration recently suggested that observed structures in the azimuthal\nangle distribution [2] might be caused by conical flow. We show here that\nconical flow produces different angular structures than predicted in [1] and\nthat, for phenomenologically acceptable values of parton energy loss, conical\nflow effects are too weak to explain the structures seen by PHENIX [2].",
"arxiv_id": "nucl-th/0503028",
"authors": [
"A. K. Chaudhuri",
"Ulrich W. Heinz"
],
"categories": [
"nucl-th",
"hep-ph"
],
"doi": "10.1103/PhysRevLett.97.062301",
"journal_ref": "Phys.Rev.Lett.97:062301,2006",
"title": "Effects of jet quenching on the hydrodynamical evolution of quark-gluon plasma",
"url": "https://arxiv.org/abs/nucl-th/0503028"
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