Single inclusive jet photoproduction at very forward rapidities in $pp$ and $pPb$ collisions at the LHC

TL;DR

This paper predicts single inclusive jet photoproduction at very forward rapidities in $pp$ and $pPb$ collisions at the LHC using the Color Dipole formalism, highlighting its potential to probe non-linear QCD effects.

Contribution

First application of the Color Dipole formalism to forward jet photoproduction in $pp$ and $pPb$ collisions at the LHC, considering the CMS-CASTOR rapidity range.

Findings

Predicted transverse momentum distributions for forward jets.

Indicated feasibility of experimental analysis to constrain high-energy QCD models.

Showed sensitivity of the process to non-linear QCD effects.

Abstract

The particle production at very forward rapidities is expected to be sensitive to the non-linear effects in the QCD dynamics at high energies. In this paper we present, for the first time, the predictions of the Color Dipole formalism for the single inclusive jet photoproduction in $pp$ and $pPb$ collisions considering the very forward rapidities probed by the CMS-CASTOR calorimeter, which will be characterized by a jet in the rapidity range of $5.2 \le Y \le 6.6$, a rapidity gap in the rapidity range probed by the central CMS detector and one of the incident hadrons remaining intact in the final state. The transverse momentum distributions are estimated considering the more recent phenomenological models for the dipole-proton scattering amplitude, which are based on the Color Glass Condensate formalism and are able to describe the inclusive and exclusive $ep$ HERA data. Our results indicate that a future experimental analysis of this process is, in principle, feasible and useful to constrain the description of the QCD dynamics at high energies.