A pQCD-based description of heavy and light flavor jet quenching

Details A pQCD-based description of heavy and light flavor jet quenching A pQCD-based description of heavy and light flavor jet quenching

2009-10-16

arxiv.org/abs/0910.3016v2

Phys.Rev.Lett.105:262301,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

v2, 4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.105.262301

We present a successful description of the medium modification of light and heavy flavor jets within a perturbative QCD (pQCD) based approach. Only the couplings involving hard partons are assumed to be weak. The effect of the medium on a hard parton, per unit time, is encoded in terms of three non-perturbative, related transport coefficients which describe the transverse momentum squared gained, the elastic energy loss and diffusion in elastic energy transfer. A fit of the centrality dependence of the suppression and the azimuthal anisotropy of leading hadrons tends to favor somewhat larger transport coefficients for heavy quarks. Imposing additional constraints based on leading order (LO) Hard Thermal Loop (HTL) effective theory, leads to a worsening of the fit.

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