dorsal/arxiv
View SchemaHadronic dissipative effects on elliptic flow in ultrarelativistic heavy-ion collisions
| Authors | Tetsufumi Hirano, Ulrich W. Heinz, Dmitri Kharzeev, Roy Lacey, Yasushi Nara |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0511046 |
| URL | https://arxiv.org/abs/nucl-th/0511046 |
| DOI | 10.1016/j.physletb.2006.03.060 |
| Journal | Phys.Lett.B636:299-304,2006 |
Abstract
We study the elliptic flow coefficient v_2(eta,b) in Au+Au collisions at sqrt(s)=200 A GeV as a function of pseudorapidity eta and impact parameter b. Using a hybrid approach which combines early ideal fluid dynamical evolution with late hadronic rescattering, we demonstrate strong dissipative effects from the hadronic rescattering stage on the elliptic flow. With Glauber model initial conditions, hadronic dissipation is shown to be sufficient to fully explain the differences between measured v_2 values and ideal hydrodynamic predictions. Initial conditions based on the Color Glass Condensate model generate larger elliptic flow and seem to require additional dissipation during the early quark-gluon plasma stage in order to achieve agreement with experiment.
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"abstract": "We study the elliptic flow coefficient v_2(eta,b) in Au+Au collisions at\nsqrt(s)=200 A GeV as a function of pseudorapidity eta and impact parameter b.\nUsing a hybrid approach which combines early ideal fluid dynamical evolution\nwith late hadronic rescattering, we demonstrate strong dissipative effects from\nthe hadronic rescattering stage on the elliptic flow. With Glauber model\ninitial conditions, hadronic dissipation is shown to be sufficient to fully\nexplain the differences between measured v_2 values and ideal hydrodynamic\npredictions. Initial conditions based on the Color Glass Condensate model\ngenerate larger elliptic flow and seem to require additional dissipation during\nthe early quark-gluon plasma stage in order to achieve agreement with\nexperiment.",
"arxiv_id": "nucl-th/0511046",
"authors": [
"Tetsufumi Hirano",
"Ulrich W. Heinz",
"Dmitri Kharzeev",
"Roy Lacey",
"Yasushi Nara"
],
"categories": [
"nucl-th",
"hep-ph",
"nucl-ex"
],
"doi": "10.1016/j.physletb.2006.03.060",
"journal_ref": "Phys.Lett.B636:299-304,2006",
"title": "Hadronic dissipative effects on elliptic flow in ultrarelativistic heavy-ion collisions",
"url": "https://arxiv.org/abs/nucl-th/0511046"
},
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