Medium-Induced Transverse Momentum Broadening via Forward Dijet Correlations

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.

6 pages, 4 figures

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• Jet physics in heavy-ion collisions
• Measurement of the pseudorapidity and centrality dependence of the transverse energy density in PbPb collisions at sqrt(s[NN]) = 2.76 TeV
• Soft Gluon Resummations in Dijet Azimuthal Angular Correlations at the Collider
• The Hot QCD White Paper: Exploring the Phases of QCD at RHIC and the LHC
• Azimuthal decorrelations between QCD jets at all orders
• An Upgrade Proposal from the PHENIX Collaboration
• Angular correlations in multi-jet final states from kt-dependent parton showers
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• Heavy-Flavour Jets in High-Energy Nuclear Collisions
• Probing the in-medium $P_T$-broadening by $\gamma$+HF angular de-correlations
• Jet quenching and effects of non-Gaussian transverse-momentum broadening on di-jet observables