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The Z^0-tagged jet event asymmetry in heavy-ion collisions at the CERN Large Hadron Collider
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abstract
Tagged jet measurements provide a promising experimental channel to quantify the similarities and differences in the mechanisms of jet production in proton-proton and nucleus-nucleus collisions. We present the first calculation of the transverse momentum asymmetry of Z^0/gamma^*-tagged jet events in sqrt{s}=2.76$ TeV reactions at the LHC. Our results combine the O(G_F\alpha_s^2) perturbative cross sections with the radiative and collisional processes that modify parton showers in the presence of dense QCD matter. We find that a strong asymmetry is generated in central lead-lead reactions that has little sensitivity to the fluctuations of the underlying soft hadronic background. We present theoretical model predictions for its shape and magnitude.
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Cited by 1 Pith paper
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Jet charge modification in dense QCD matter
The authors derive a factorized formula for the average jet charge in heavy-ion collisions from soft-collinear effective theory and predict its modification relative to proton-proton collisions.
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