Eur. Phys. J. C (2018) 78: 702
https://doi.org/10.1140/epjc/s10052-018-6186-1

Regular Article - Theoretical Physics

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

¹ National Centre for Nuclear Research, 00-681, Warsaw, Poland
² Departamento de Física de Partículas and IGFAE, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Galicia, Spain
³ Physics Department, University of Connecticut, 2152 Hillside road, Storrs, CT, 06269, USA
⁴ Theoretical Physics Department, CERN, 1211, Geneva 23, Switzerland
⁵ Physics Department, Ben-Gurion University of the Negev, 84105, Beer Sheva, Israel

^* e-mail: tolga.altinoluk@ncbj.gov.pl

Received: 30 May 2018
Accepted: 24 August 2018
Published online: 1 September 2018

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.