Phenomenological analysis of the possible impact of Double Parton Scattering in double $J/\psi$ production at the COMPASS detector using the CERN $\pi^-$ beam at 190 GeV/c

TL;DR

This paper investigates how Double Parton Scattering influences double $J/eta$ production at COMPASS, finding a significant suppression in cross section and providing estimates and distributions relevant for experimental analysis.

Contribution

It offers the first phenomenological analysis of DPS effects on double $J/eta$ production at COMPASS energies, including suppression factors and distribution predictions.

Findings

DPS cross section is suppressed by about 50% due to kinematic effects.

Upper limit for DPS double $J/eta$ production cross section at COMPASS energy.

Presented Feynman-$x$ distributions for double $J/eta$ production.

Abstract

In this paper we discuss the impact of the Double Parton Scattering (DPS) mechanism for the production of $J/\psi$ pairs at the COMPASS energy. We find that the kinematics suppresses the DPS cross section by a factor of $\sim1/2$. The upper limit for the double $J/\psi$ production DPS cross section at the COMPASS energy is estimated. The Feynman-$x$ distributions of double $J/\psi$ production with the CERN $\pi^-$ beam are presented.