Jet-dilepton conversion in expanding quark-gluon plasma

TL;DR

This paper calculates large mass dilepton production from jet-dilepton conversion in expanding quark-gluon plasma, showing it surpasses other sources at certain mass ranges and energies, with transverse flow significantly affecting results.

Contribution

It provides the first detailed calculation of jet-dilepton conversion in an expanding QGP at RHIC and LHC energies, including hydrodynamic flow and jet energy loss effects.

Findings

Jet-dilepton conversion exceeds thermal and Drell-Yan dileptons in specified mass ranges.

Transverse flow causes rapid cooling and suppresses dilepton production, especially at LHC energies.

Jet energy loss impacts dilepton yields in the quark-gluon plasma.

Abstract

We calculate the production of large mass dileptons from the jet-dilepton conversion in the expanding quark-gluon plasma at Relativistic Heavy Ion Collider (RHIC) and Large Hadron Collider (LHC) energies. The jet-dilepton conversion exceeds the thermal dilepton production and Drell-Yan process in the large mass region of 3.9 GeV$<M<$5.8 GeV and 6.3 GeV$<M<$8.7 GeV in central Pb+Pb collisions at $\sqrt{s_{NN}}$=2.76 TeV and 5.5 TeV, respectively. We present the numerical solution of ideal fluid hydrodynamics. We find that the transverse flow leads to a rapid cooling of the fire ball. The suppression due to transverse flow is appeared from small to large mass, the transverse flow effect becomes important at LHC energies. The energy loss of jets in the hot and dense medium is also included.