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Download or read book Scaling Properties of Fractional Momentum Loss of High- [math][msub][mi]p[/mi][mi]T[/mi][/msub][/math] Hadrons in Nucleus-nucleus Collisions at [math][msqrt][msub][mi][/mi][mrow][mi]N[/mi][mi]N[/mi][/mrow][/msub][/msqrt][/math] from 62.4 GeV to 2.76 TeV. written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present measurements of the fractional momentum loss (Sloss = delta pT / pT) of high-transverse-momentum-identified hadrons in heavy-ion collisions. Using pi0 in Au + Au and Cu + Cu collisions at √sNN = 62.4 and 200 GeV measured by the PHENIX experiment at the Relativistic Heavy Ion Collider and and charged hadrons in Pb + Pb collisions measured by the ALICE experiment at the Large Hadron Collider, we studied the scaling properties of Sloss as a function of a number of variables: the number of participants, Npart, the number of quark participants, Nqp, the charged-particle density, dNch/d[eta], and the Bjorken energy density times the equilibration time, epsilonBj[tau]0. We also find that the pT, where Sloss has its maximum, varies both with centrality and collision energy. Above the maximum, Sloss tends to follow a power-law function with all four scaling variables. Finally, the data at √sNN = 200 GeV and 2.76 TeV, for sufficiently high particle densities, have a common scaling of Sloss with dNch/d[eta] and [epsilon]Bj[tau]0, lending insight into the physics of parton energy loss.