Forward $J/\psi$ and very backward jet inclusive production at the LHC

TL;DR

This paper proposes studying the simultaneous production of a forward J/ψ meson and a backward jet at the LHC to investigate high-energy resummation effects using BFKL formalism, with predictions based on different J/ψ production mechanisms.

Contribution

It introduces a new observable involving forward J/ψ and backward jet production at the LHC to probe BFKL resummation effects, comparing various J/ψ production models.

Findings

Predictions for the production rates based on NRQCD singlet and octet mechanisms.

Analysis of the impact of different J/ψ production models on the observable.

Proposal of a new experimental signature to test high-energy QCD dynamics.

Abstract

In the spirit of Mueller-Navelet dijet production, we propose and study the inclusive production of a forward $J/\psi$ and a very backward jet at the LHC as an observable to reveal high-energy resummation effects \`a la BFKL. We obtain several predictions, which are based on the various mechanisms discussed in the literature to describe the production of the $J/\psi$, namely, NRQCD singlet and octet contributions, and the color evaporation model.