{ "id": "nucl-th/0702039", "version": "v2", "published": "2007-02-12T14:46:00.000Z", "updated": "2007-04-25T06:21:54.000Z", "title": "Elliptic flow of thermal dileptons in relativistic nuclear collisions", "authors": [ "Rupa Chatterjee", "Dinesh K. Srivastava", "Ulrich W. Heinz", "Charles Gale" ], "comment": "Latex 8 pages including a total of 13 postscript figures. Added 2 figures, additional references, and expanded discussions. Figures modified for better viewing. To appear in Phys. Rev. C", "journal": "Phys.Rev.C75:054909,2007", "doi": "10.1103/PhysRevC.75.054909", "categories": [ "nucl-th" ], "abstract": "We calculate the transverse momentum and invariant mass dependence of elliptic flow of thermal dileptons for Au+Au collisions at the Relativistic Heavy Ion Collider. The system is described using hydrodynamics, with the assumption of formation of a thermalized quark-gluon plasma at some early time, followed by cooling through expansion, hadronization and decoupling. Dileptons are emitted throughout the expansion history: by annihilation of quarks and anti-quarks inthe early quark-gluon plasma stage and through a set of hadronic reactions during the late hadronic stage. The resulting differential elliptic flow exhibits a rich structure, with different dilepton mass windows providing access to different stages of the expansion history. Elliptic flow measurements for dileptons,combined with those of hadrons and direct photons, are a powerful tool for mapping the time-evolution of heavy-ion collisions.", "revisions": [ { "version": "v2", "updated": "2007-04-25T06:21:54.000Z" } ], "analyses": { "subjects": [ "12.38.Mh", "25.75.-q" ], "keywords": [ "elliptic flow", "relativistic nuclear collisions", "thermal dileptons", "relativistic heavy ion collider", "inthe early quark-gluon plasma stage" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Phys. Rev. C" }, "note": { "typesetting": "LaTeX", "pages": 8, "language": "en", "license": "arXiv", "status": "editable", "inspire": 744396 } } }