Possibility for $J/\Psi$ suppression in high multiplicity proton-proton collisions at $\sqrt{s_{NN}}=7\,$TeV

TL;DR

This paper investigates the potential suppression of $J/ extPsi$ mesons in high multiplicity proton-proton collisions at 7 TeV, using a transport model to predict modifications in $J/ extPsi$ yields.

Contribution

It introduces a novel prediction of $J/ extPsi$ suppression in high multiplicity pp collisions at LHC energies using the UrQMD transport approach.

Findings

$J/ extPsi$ suppression increases with charged particle multiplicity.

Explicit interactions with comovers affect $J/ extPsi$ yield.

Suppression effects are predicted at LHC energies.

Abstract

We study $J/\Psi$ absorption in high multiplicity proton-proton (pp) collisions at $\sqrt {s_{NN}}=7\,$TeV. We predict a modification of the $J/\Psi$-yield within the UrQMD transport approach, where explicit interactions of the $J/\Psi$ with the surrounding comovers and a prehadronic phase with adjusted cross sections and $J/\Psi$ melting is included. We present the analog of the nuclear modification factor in pp collisions at various charged particle multiplicities. It turns out that $J/\Psi$-Mesons may be suppressed towards higher particle multiplicities in pp collisions at LHC energies.