منابع مشابه
Energy loss for heavy quarks in relation to light partons: is radiative energy loss for heavy quarks anomalous?
The scaling properties of jet-suppression measurements are compared for nonphotonic electrons (e+/-) and neutral pions (pi(0)) in Au+Au collisions at sqrt[S(NN)]=200 GeV. For a broad range of transverse momenta and collision centralities, the comparison is consistent with jet quenching dominated by radiative energy loss for both heavy and light partons. Less quenching is indicated for heavy qua...
متن کاملMass Hierarchy of Collisional Energy Loss
Collisional parton energy loss is revisited within a simple model assuming incoherent elastic scattering of on-shell projectile partons on partonic constituents of the QGP with HTL screening. The thermal motion of plasma particles is carefully taken into account. Results on dE/dx are found to be consistent with other authors. There is a significant discrepancy in the energy loss pattern for the...
متن کاملEnergy loss of fast quarks in nuclei.
We report an analysis of the nuclear dependence of the yield of Drell-Yan dimuons from the 800 GeV/c proton bombardment of 2H, C, Ca, Fe, and W targets. Employing a new formulation of the Drell-Yan process in the rest frame of the nucleus, this analysis examines the effect of initial-state energy loss and shadowing on the nuclear-dependence ratios versus the incident proton's momentum fraction ...
متن کاملRethinking 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...
متن کاملHeavy quark jet quenching with collisional plus radiative energy loss and path length fluctuations
With the QGP opacity computed perturbatively and with the global entropy constraints imposed by the observed dNch/dy ≈ 1000, radiative energy loss alone cannot account for the observed suppression of single non-photonic electrons. We show that collisional energy loss, which previously has been neglected, is comparable to radiative loss for both light and heavy jets and may in fact be the domina...
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ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 2013
ISSN: 0375-9474
DOI: 10.1016/j.nuclphysa.2013.02.012