Advancing QCD-based calculations of energy loss
نویسندگان
چکیده
منابع مشابه
Rethinking the QCD collisional energy loss
It is shown that to leading order the collisional energy loss of an energetic parton in the hot quark gluon plasma reads dE/dx ∼ α(m2D)T , where the scale of the coupling is determined by the (parametrically soft) Debye screening mass. Compared to previous expressions derived by Bjorken and other authors, dE/dx ∼ αT 2 ln(ET/m2D), the rectified result takes into account the running of the coupli...
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In this study, the energy loss near edge structure (ELNES) of carbon atoms in chair and tricycle conformers of hydrogenated graphene, namely 'graphane', has been calculated in the density functional theory using FP-LAPW method, and then, it has been compared with that of graphite and graphene. Using ELNES from chair conformer, the carbon K-edge was found to have a few main features including el...
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The radiative energy loss of a quark jet traversing a finite size QCD medium with dynamical constituents is calculated to first order in opacity. Although finite size corrections reduce the energy loss relative to an infinite dynamical QCD medium, under realistic conditions it remains significantly larger than in a static medium. Quantitative predictions of jet suppression in relativistic heavy...
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Computation of collisional energy loss in finite size QCD medium has become crucial to obtain reliable predictions for jet quenching in ultra-relativistic heavy ion collisions. We here compute this energy loss up to the zeroth order in opacity. Our approach consistently treats both soft and hard contributions to the collisional energy loss. Consequently, it removes the unphysical energy gain in...
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Heavy quark medium induced radiative energy loss is derived to all orders in opacity, (L/λg) . The analytic expression generalizes the GLV opacity expansion for massless quanta to heavy quarks with mass M in a QCD plasma with a gluon dispersion characterized by an asymptotic plasmon mass, mg = gT/ √ 2. Remarkably, we find that the general result is obtained by simply shifting all frequencies in...
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ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 2013
ISSN: 0375-9474
DOI: 10.1016/j.nuclphysa.2012.12.101