Speaker
Rone Andrade
(Universidade de São Paulo USP)
Description
In this talk we shall discuss how the energy-momentum deposited by partonic dijets in the quark-gluon plasma may affect the direct, elliptic and triangular flow of low (and intermediate) $p_T$ hadrons in Au+Au collisions at RHIC. The dijets are modeled as external sources in the energy-momentum conservation equations, which are solved on an event-by-event basis within the ideal hydro approximation. Differential anisotropic flow coefficients in the range $p_T > 1$GeV are found to be significantly enhanced if each jet deposits, on average, more than 8 GeV in the medium. Moreover, because this jet-induced extra anisotropic flow is not related to the initial fluctuations of the geometry, the correlation between the integrated $v_2$ and $v_3$ coefficients and their corresponding eccentricities previously found to hold in jetless simulations is considerably weakened. The extra amount of direct flow induced by dijets may be quantified by comparing the azimuthal dependence of dihadron correlations in dijet events with the corresponding quantity computed in events without dijets. This information can be used to give a rough estimate of the magnitude of the effective coupling between the jets and the medium.
| On behalf of collaboration: | None |
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Primary author
Rone Andrade
(Universidade de São Paulo USP)
Co-authors
Gabriel Denicol
(McGill University)
Jorge Noronha
(University of Sao Paulo)
