Towards detailed tomography of high energy heavy-ion collisions by $\gamma$-jet

Abstract

Within a multi-phase transport (AMPT) model with string melting scenario, the transverse momentum imbalance between prompt photon and jet is studied in Pb+Pb collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}$ = 2.76 TeV. Jet loses more energy in more central collisions due to strong partonic interactions between jet parton shower and partonic matter, which is more significant than due to hadronic interactions only. The hadronization and final-state hadronic interactions have little influences on the imbalance. The imbalance ratio $x_{j\gamma }$ is sensitive to both production position and passing direction of $\gamma$-jet, which provides an opportunity to do detail $\gamma$-jet tomography on the formed partonic matter by selecting different $x_{j\gamma }$ ranges. It is also proposed that $\gamma$-hadron azimuthal correlation associated with photon+jet is a probe to see the medium responses to different $\gamma$-jet production configurations.

5 pages, 4 figures, final published version

References in corpus (5)

• Studies of jet quenching using isolated-photon + jet correlations in PbPb and pp collisions at sqrt(s[NN]) = 2.76 TeV
• Charm elliptic flow at RHIC
• Tomography of high-energy nuclear collisions with photon-hadron correlations
• Jets, Mach cone, hot spots, ridges, harmonic flow, dihadron and $\gamma$-hadron correlation in high-energy heavy-ion collisions
• Mach cone induced by $\gamma$-triggered jets in high-energy heavy-ion collisions

Cited by in corpus (16)

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• Enhancement of baryon-to-meson ratios around jets as a signature of medium response
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• Jet shape and redistribution of the lost energy from jets in Pb+Pb collisions at the LHC in a multiphase transport model
• Overall momentum balance and redistribution of the lost energy in asymmetric dijet events in 2.76~ATeV Pb-Pb collisions with a multi-phase transport model
• Azimuthal anisotropies of reconstructed jets in Pb+Pb collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}$ = 2.76 TeV in a multiphase transport model
• Extracting jet transport parameter $\hat{q}$ from a multiphase transport model
• Angular distributions of higher order splitting functions in the vacuum and in dense QCD matter
• Medium modifications of photon-tagged jet fragmentation function in high-energy heavy-ion collisions
• Search for jet quenching effects on the plain jet mass in Pb+Pb collisions at the LHC with a multiphase transport model