A unified description of small, peripheral, and large system suppression data from pQCD

Abstract

We present quantitative predictions for the nuclear modification factor in both small and peripheral systems from a pQCD-based energy loss model that is constrained by light- and heavy-flavor suppression data from central heavy-ion collisions. We find nearly identical suppression for central $p/d+A$ collisions as for peripheral $A+A$ collisions, quantitatively consistent with the measured 20% suppression of neutral pions produced in $d+\mathrm{Au}$ collisions by PHENIX, but dramatically inconsistent with the measured 20% enhancement of charged hadrons produced in $p+\mathrm{Pb}$ collisions by ATLAS. We demonstrate that this equivalence of central small system suppression and peripheral large system suppression is insensitive to the underlying energy loss model.

6 pages (excluding references), 4 figures. Updated to be consistent with published letter in Physics Letters B

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Cited by in corpus (4)

• Bayesian Constraints on Pre-Equilibrium Jet Quenching and Predictions for Oxygen Collisions
• Statistical analysis of pQCD energy loss across system size, flavor, $\sqrt{s_{NN}}$, and $p_T$
• Collisional and radiative energy loss in small systems
• Geometric Bias and Centrality Dependence of Jet Quenching in High-Energy Nuclear Collisions