Long range correlations in high multiplicity hadron collisions:building bridges with ridges

Abstract

We discuss the physics of the ridge -- azimuthally collimated long range rapidity correlations -- in high multiplicity proton-proton and proton-nucleus collisions. We outline some of the theoretical discussions in the literature that address the systematics of these ridge correlations.

Comments: 13 pages, 2 figures. Invited talk at MIT p+A workshop, to be published in a Special Issue of Annals of Physics in honor of Prof. Wit Busza