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26 April 2024

» arxiv » 0907.2190

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Will jets reduce the elliptic flow at LHC, while decays of resonances restore the constituent quark scaling?
G. Eyyubova ; L. Bravina ; V.L. Korotkih ; I.P. Lokhtin ; L.V. Malinina ; S.V. Petrushanko ; A.M. Snigirev ; E. Zabrodin ;
Date:	13 Jul 2009
Abstract:	Formation and evolution of the elliptic flow pattern in Pb+Pb collisions at sqrt{s}=5.5 ATeV and in Au+Au collisions at sqrt{s}=200 AGeV are analyzed for different hadron species within the framework of HYDJET++ Monte-Carlo model. The model contains both hydrodynamic state and jets, thus allowing for a study of the interplay between the soft and hard processes. It is found that jets are terminating the rise of the elliptic flow with increasing transverse momentum. Since jets are more influential at LHC compared to RHIC, the elliptic flow at LHC should be weaker than that at RHIC. The influence of resonance decays on particle elliptic flow is investigated also. These final state interactions enhance the low-p_T part of the v_2 of pions and light baryons, and work towards the fulfilment of idealized constituent quark scaling.
Source:	arXiv, 0907.2190
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