Transverse momentum broadening of vector bosons in heavy ion collisions at the LHC

TL;DR

This paper calculates the transverse momentum broadening of vector bosons in heavy ion collisions at the LHC using perturbative QCD, providing predictions for W/Z bosons and quarkonium states as probes of medium effects.

Contribution

It offers the first perturbative QCD predictions for transverse momentum broadening of vector bosons and quarkonium in heavy ion collisions at the LHC, highlighting their potential as clean probes.

Findings

Predicted transverse momentum broadening for W/Z bosons from leptonic decays.

Estimated upper limits for J/ψ and Υ transverse momentum broadening as a function of N_part.

Demonstrated the sensitivity of vector bosons to initial-state medium effects.

Abstract

We calculate in perturbative QCD the transverse momentum broadening of vector bosons in heavy ion collisions at the Large Hadron Collider (LHC). We predict transverse momentum broadening of $W/Z$ bosons constructed from their leptonic decay channels, which should be a clean probe of initial-state medium effect. We also predict the upper limit of transverse momentum broadening of J/$\psi$ and $\Upsilon$ production as a function of N$_{\rm part}$ at the LHC energy.