Exclusive vector meson photoproduction with proton dissociation in photon-hadron interactions at the LHC

TL;DR

This paper investigates exclusive vector meson photoproduction with proton dissociation in photon-hadron interactions at the LHC, providing predictions for rapidity distributions and cross sections to aid future experimental studies of QCD in the non-linear regime.

Contribution

It presents the first detailed predictions for EVMP with leading baryons in $pp$ and $p$Pb collisions at LHC energies, including the contribution of delta states.

Findings

The $V + \, \Delta$ cross section is nearly 30% of the $V + n$ one.

Rapidity distributions for $ ho$ and $J/\psi$ are provided for future experimental comparison.

Results suggest feasible experimental analysis to study leading particle production.

Abstract

At forward rapidities and high energies we expect to probe the non-linear regime of Quantum Chromodynamics (QCD). One of the most promising observables to constrain the QCD dynamics in this regime is exclusive vector meson photoproduction (EVMP). We study the EVMP in association with a leading baryon (product of the proton dissociation) in photon-hadron interactions that take place in $pp$ and $p$Pb collisions at large impact parameters. We present the rapidity distributions for $\rho$ and $J/\psi$ photoproduction in association with a leading baryon (neutron and delta states) at LHC run 2 energies. Our results show that the $V + \Delta$ cross section is almost 30 % of the $V + n$ one. Our results also show that a future experimental analysis of these processes is, in principle, feasible and can be useful to study the leading particle production.