Abstract
The properties of fully reconstructed jet are investigated in p + p and Pb + Pb collisions atsNN= 2.76 TeV within a multiphase transport (AMPT) model with both partonic scatterings and hadronic rescatterings. A large transverse momentum (pT) asymmetry of dijet or photon-jet arises from the strong interactions between jet and partonic matter. Theξ-dependent jet fragmentation function in Pb + Pb collisions is decomposed into two contributions from different jet hadronization mechanisms, that is, fragmentation versus coalescence. The medium modification of differential jet shape displays that the jet energy is redistributed towards a larger radius owing to jet-medium interactions in heavy-ion collisions. Jet triangular azimuthal anisotropy coefficient,v3jet, which shows a smaller magnitude than the elliptic coefficientv2jet, decreases more quickly with increasing jetpT, which can be attributed to a path-length effect of jet energy loss. All of these properties of full jet are consistent with the jet energy loss mechanism in a stronglyinteracting partonic matter in high-energy heavy-ion collisions.
Highlights
Plenty of experimental data from the BNL Relativistic Heavy Ion Collider (RHIC) and the CERN Large Hadron Collider (LHC) have confirmed that a nearly perfect fluid of strongly interacting quark-gluon plasma (QGP) could be created in the early state of high-energy heavy-ion collisions [1,2,3,4]
The properties of fully reconstructed jet are investigated within the a multiphase transport (AMPT) model with both elastic partonic scatterings and hadronic rescatterings
A large pT asymmetry of dijet or photon-jet is produced by the strong interactions between jets and partonic matter
Summary
Plenty of experimental data from the BNL Relativistic Heavy Ion Collider (RHIC) and the CERN Large Hadron Collider (LHC) have confirmed that a nearly perfect fluid of strongly interacting quark-gluon plasma (QGP) could be created in the early state of high-energy heavy-ion collisions [1,2,3,4]. The disappearance of away-side peak in dihadron azimuthal correlation presents the picture that the away-side jet is strongly suppressed by the QGP in central Au + Au collisions at the top RHIC energy [8]. The properties of reconstructed jets are presented for p + p and Pb + Pb collisions at √sNN = 2.76 TeV by using a multiphase transport (AMPT) model, which includes both dynamical evolutions of partonic scatterings and hadronic rescatterings. (iv) Jet V2 be in a good agreement with the recent ATLAS data and let jet V3, which has a smaller magnitude than jet V2, decrease quickly with the increasing of jet transverse momentum [26] All of these features support a picture of jet energy loss in a strongly interacting partonic matter.
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