Impact of temperature dependence of the energy loss on jet quenching observables

Scardina, F. and Di Toro, M. and Greco, V. (2011) Impact of temperature dependence of the energy loss on jet quenching observables. Il nuovo cimento C, 34 (2). pp. 67-73. ISSN 1826-9885

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The quenching of jets (particles with pT � T,ΛQCD) in ultrarelativistic heavy-ion collisions has been one of the main prediction and discovery at RHIC.We have studied, by a simple jet quenching modeling, the correlation between different observables like the nuclear modification factor RAA(pT ), the elliptic flow v2 and the ratio of quark to gluon suppression RAA(quark)/RAA(gluon). We show that the relation among these observables is strongly affected by the temperature dependence of the energy loss. In particular the large v2 and and the nearly equal RAA(pT) of quarks and gluons can be accounted for only if the energy loss occurs mainly around the temperature Tc and the flavour conversion is significant. Finally we point out that the efficency in the conversion of the space eccentricity into the momentum one (v2) results to be quite smaller with respect to the one coming from elastic scatterings in a fluid with a viscosity-to-entropy density ratio 4πη/s = 1.

Item Type: Article
Uncontrolled Keywords: Quark-gluon plasma ; Relativistic heavy-ion collisions ; Collective flow
Subjects: 500 Scienze naturali e Matematica > 530 Fisica
Depositing User: Marina Spanti
Date Deposited: 06 Apr 2020 15:56
Last Modified: 06 Apr 2020 15:56

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