Long-range azimuthal correlations in proton-proton and proton-nucleus collisions from the incoherent scattering of partons

Abstract

We show that the incoherent elastic scattering of partons, as present in a multi-phase transport model (AMPT), with a modest parton-parton cross-section of $\sigma =1.5-3$ mb, naturally explains the long-range two-particle azimuthal correlation as observed in proton-proton and proton-nucleus collisions at the Large Hadron Collider.

Comments: 7 pages, 6 figures; 2 new figures added, final published version