Variation of jet quenching from RHIC to LHC and thermal suppression of QCD coupling constant

Details Variation of jet quenching from RHIC to LHC and thermal suppression of QCD coupling constant Variation of jet quenching from RHIC to LHC and thermal suppression of QCD coupling constant

2011-05-10

arxiv.org/abs/1105.2028v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 2 figures

Scientific paper

We perform a joint jet tomographic analysis of the data on the nuclear modification factor $R_{AA}$ from PHENIX at RHIC and ALICE at LHC. The computations are performed accounting for radiative and collisional parton energy loss with running coupling constant. Our results show that the observed slow variation of $R_{AA}$ from RHIC to LHC indicates that the QCD coupling constant is suppressed in the quark-gluon plasma produced at LHC.

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