Quarkonium+$\gamma$ production in coherent hadron - hadron interactions at LHC energies

TL;DR

This paper investigates the production of quarkonium plus photon in coherent hadron-hadron collisions at LHC energies, estimating cross sections and distributions to assess experimental feasibility.

Contribution

It introduces a method to estimate $H + \gamma$ production cross sections at LHC using NRQCD with different matrix element sets, focusing on coherent interactions.

Findings

Predicted total cross sections for $p + p ightarrow p + H + \gamma + X$ at 7 and 14 TeV.

Rapidity distributions indicating feasible detection of $J/\Psi + \gamma$ at LHC.

Demonstrated the potential for experimental analysis of quarkonium plus photon production.

Abstract

In this paper we study the $H + \gamma$ ($H = J/\Psi$ and $\Upsilon$) production in coherent hadron - hadron interactions at LHC energies. Considering the ultrarelativistic protons as a source of photons, we estimate the $\gamma + p \rightarrow H + \gamma + X$ cross section using the non-relativistic QCD (NRQCD) factorization formalism and considering different sets of values for the matrix elements. Our results for the total $ p + p \rightarrow p + H + \gamma + X$ cross sections and rapidity distributions at $\sqrt{s} = 7$ and 14 TeV demonstrate that the experimental analysis of the $J/\Psi + \gamma$ production at LHC is feasible.