Transverse momentum imbalance of back-to-back particle production in p+A and e+A collisions

TL;DR

This paper investigates how nuclear matter enhances the transverse momentum imbalance in back-to-back particle production across various collision types, providing theoretical predictions for future experiments at RHIC, LHC, EIC, and LHeC.

Contribution

It offers a comprehensive analysis of initial and final-state multiple scattering effects on transverse momentum imbalance in p+A and e+A collisions, with detailed predictions for upcoming experimental setups.

Findings

Nuclear enhancement of transverse momentum imbalance is quantified.

Predictions are made for specific processes at RHIC, LHC, EIC, and LHeC.

Both initial and final-state scattering effects are evaluated.

Abstract

We study the nuclear enhancement of the transverse momentum imbalance for back-to-back particle production in both p+A and e+A collisions. Specifically, we present results for photon+jet and photon+hadron production in p+A collisions, di-jet and di-hadron production in e+A collisions, and heavy-quark and heavy-meson pair production in both p+A and e+A collisions. We evaluate the effect of both initial-state and final-state multiple scattering, which determine the strength of the nuclear-induced transverse momentum imbalance in these processes. We give theoretical predictions for the experimentally relevant kinematic regions in d+Au collisions at RHIC, p+Pb collisions at LHC and e+A collisions at the future EIC and LHeC.