dorsal/arxiv
View SchemaAnisotropic flow of charged and identified hadrons in the quark-gluon string model for Au+Au collisions at sqrt(s) = 200 GeV
| Authors | G. Burau, J. Bleibel, C. Fuchs, Amand Faessler, L. V. Bravina, E. E. Zabrodin |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0411117 |
| URL | https://arxiv.org/abs/nucl-th/0411117 |
| DOI | 10.1103/PhysRevC.71.054905 |
| Journal | Phys.Rev. C71 (2005) 054905 |
Abstract
The pseudorapidity behaviour of the azimuthal anisotropy parameters v_1 and v_2 of inclusive charged hadrons and their dependence on the centrality has been studied in Au+Au collisions at full RHIC energy of sqrt(s) = 200 GeV within the microscopic quark-gluon string model. The QGSM simulation results for the directed flow v_1 show antiflow alignment within the pseudorapidity range |eta| < 2 in a fair agreement with the experimental v_1(eta) data, but cannot reproduce the further development of the antiflow up to |eta| around 3.5. The eta dependence of the elliptic flow v_2 extracted from the simulations agrees well with the experimental data in the whole pseudorapidity range for different centrality classes. The centrality dependence of the integrated elliptic flow of charged hadrons in the QGSM almost coincides with the PHOBOS experimental distribution. The transverse momentum dependence of the elliptic flow of identified and inclusive charged hadrons is studied also. The model reproduces quantitatively the low p_T part of the distributions rather good, but underestimates the measured elliptic flow for transverse momenta p_T > 1 GeV/c. Qualitatively, however, the model is able to reproduce the saturation of the v_2(p_T) spectra with rising p_T as well as the crossing of the elliptic flow for mesons and baryons.
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"abstract": "The pseudorapidity behaviour of the azimuthal anisotropy parameters v_1 and\nv_2 of inclusive charged hadrons and their dependence on the centrality has\nbeen studied in Au+Au collisions at full RHIC energy of sqrt(s) = 200 GeV\nwithin the microscopic quark-gluon string model. The QGSM simulation results\nfor the directed flow v_1 show antiflow alignment within the pseudorapidity\nrange |eta| \u003c 2 in a fair agreement with the experimental v_1(eta) data, but\ncannot reproduce the further development of the antiflow up to |eta| around\n3.5. The eta dependence of the elliptic flow v_2 extracted from the simulations\nagrees well with the experimental data in the whole pseudorapidity range for\ndifferent centrality classes. The centrality dependence of the integrated\nelliptic flow of charged hadrons in the QGSM almost coincides with the PHOBOS\nexperimental distribution. The transverse momentum dependence of the elliptic\nflow of identified and inclusive charged hadrons is studied also. The model\nreproduces quantitatively the low p_T part of the distributions rather good,\nbut underestimates the measured elliptic flow for transverse momenta p_T \u003e 1\nGeV/c. Qualitatively, however, the model is able to reproduce the saturation of\nthe v_2(p_T) spectra with rising p_T as well as the crossing of the elliptic\nflow for mesons and baryons.",
"arxiv_id": "nucl-th/0411117",
"authors": [
"G. Burau",
"J. Bleibel",
"C. Fuchs",
"Amand Faessler",
"L. V. Bravina",
"E. E. Zabrodin"
],
"categories": [
"nucl-th",
"nucl-ex"
],
"doi": "10.1103/PhysRevC.71.054905",
"journal_ref": "Phys.Rev. C71 (2005) 054905",
"title": "Anisotropic flow of charged and identified hadrons in the quark-gluon string model for Au+Au collisions at sqrt(s) = 200 GeV",
"url": "https://arxiv.org/abs/nucl-th/0411117"
},
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