Medium-Induced Transverse Momentum Broadening via Forward Dijet Correlations

TL;DR

This paper proposes that forward rapidity dijet azimuthal angle correlations at future LHC and RHIC runs can effectively reveal medium-induced transverse momentum broadening, offering insights into the medium's transport properties.

Contribution

It demonstrates that forward rapidity dijet correlations, enhanced by detector upgrades, can detect transverse momentum broadening with high sensitivity, complementing RHIC measurements.

Findings

Forward rapidity dijet correlations can reveal medium broadening.

Upgraded detectors improve sensitivity to broadening effects.

Combined measurements constrain medium transport properties.

Abstract

Dijet azimuthal angle correlation is arguably one of the most direct probes of the medium-induced broadening effects. The evidence for such broadening, however, is not yet clearly observed within the precision of current mid-rapidity measurements at RHIC and the LHC. We show that the dijet correlation in forward rapidity from the future LHC RUN3, aided by forward detector upgrades, can reveal this broadening thanks to the steeper jet spectra, suppressed vacuum radiations and lower underlying event background, with a sensitivity comparable to that of the future high-luminosity Au+Au run at RHIC. Dijet correlation measurements at the two facilities together can provide powerful constraints on the temperature dependence of medium transport properties.