Double and triple inclusive gluon production at mid rapidity: quantum interference in p-A scattering

TL;DR

This paper advances the understanding of gluon production in proton-nucleus collisions by including quantum interference effects, revealing the roles of HBT and Bose enhancement in particle correlations beyond previous approximations.

Contribution

It introduces a comprehensive calculation of multi-gluon production that incorporates quantum interference, extending beyond the traditional glasma graph approximation.

Findings

Identification of HBT and Bose enhancement contributions to gluon correlations.

Demonstration that target Bose enhancement is suppressed at large N_c.

Extension of gluon production models to include quantum interference effects.

Abstract

We compute double and triple inclusive gluon production in p-A scattering beyond the so-called "glasma graph" approximation. We consider quantum interference effects and identify in this general setup the terms responsible for the gluon HBT and initial wave function Bose enhancement which lead to correlations in particle production. Both of these terms originate from the factorizable part of the quadrupole and sextupole terms in the production cross section. We also show that the target Bose enhancement in this regime is suppressed at large number of colors.