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Jet Quenching in the Opposite Direction of a Tagged Photon in High-Energy Heavy-Ion Collisions
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abstract
We point out that events associated with large $E_T$ direct photons in high-energy heavy-ion collisions can be used to study jet energy loss in dense matter. In such events, the $p_T$ spectrum of charged hadrons from jet fragmentation in the opposite direction of the tagged photon is estimated to be well above the background which can be reliably subtracted at moderately large $p_T$. We demonstrate that comparison between the extracted fragmentation function in $AA$ and $pp$ collisions can be used to determine the jet energy loss and the interaction mean-free-path in the dense matter produced in high-energy heavy-ion collisions.
Forward citations
Cited by 2 Pith papers
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Interplay of prompt and non-prompt photons in photon-triggered jet observables
Including isolated non-prompt (bremsstrahlung) photons in JETSCAPE simulations improves agreement with measured photon-jet asymmetry and azimuthal correlations in pp and Pb-Pb collisions at 5.02 TeV.
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QGP@50: More than Four Decades of Jet Quenching
A historical and technical review of jet quenching in heavy-ion collisions, covering four decades of theory, the RHIC discovery, and modern Bayesian extractions of the jet transport parameter qhat.
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