Initial state and pre-equilibrium effects in small systems

Abstract

We discuss the importance of initial state and early time effects with regard to the theoretical understanding of long range azimuthal correlations observed in high-multiplicity $p+p$ and $p+A$ collisions.

Comments: 6 pages; Proceedings of Quark Matter 2015, Kobe, Japan -- Invited plenary talk in special session on "QGP in small systems?"