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Anisotropic flow of charged and identified hadrons in the quark-gluon string model for Au+Au collisions at sqrt(s) = 200 GeV | | G. Burau
; J. Bleibel
; C. Fuchs
; Amand Faessler
; L.V. Bravina
; E.E. Zabrodin
; | | Date: |
29 Nov 2004 | | Journal: | Phys.Rev. C71 (2005) 054905 | | Subject: | nucl-th nucl-ex | | Affiliation: | 2,3), E.E. Zabrodin (2,3) ( University of Tuebingen, Germany, University of Oslo, Norway, Moscow State University, Russia | | 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. | | Source: | arXiv, nucl-th/0411117 | | Services: | Forum | Review | PDF | Favorites | |
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