Mass hierarchy in identified particle distributions in proton-lead collisions
Nuclear Theory
2013-10-29 v2 High Energy Physics - Phenomenology
Abstract
We study the mass dependence for identified-particle average transverse momentum and harmonic flow coefficients in proton-lead (p-Pb) collisions, recently measured at the LHC. The collective mechanism in the p-Pb system predicts a specific mass ordering in these observables: the growth of the average transverse momentum with the particle mass and a mass splitting of the elliptic flow coefficient, i.e., smaller differential elliptic flow of protons than pions for p_T<2 GeV. This provides an opportunity to distinguish between the collective scenario and the mechanism based on the initial gluon dynamics in the evolution of the p-Pb system.
Keywords
Cite
@article{arxiv.1307.5060,
title = {Mass hierarchy in identified particle distributions in proton-lead collisions},
author = {Piotr Bozek and Wojciech Broniowski and Giorgio Torrieri},
journal= {arXiv preprint arXiv:1307.5060},
year = {2013}
}