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Probing the equilibration of the QCD matter created in heavy-ion collisions with dileptons

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arxiv 2407.04156 v2 pith:ERF3RJE7 submitted 2024-07-04 nucl-th hep-phnucl-ex

Xiang-Yu Wu , Lipei Du , Charles Gale , Sangyong Jeon This is my paper · ORCID
classification nucl-thhep-phnucl-ex
keywords dileptoncollisionscontributionthermalafterburneranisotropicapproachaspects
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abstract

A systematic study of intermediate invariant mass dilepton production in Pb+Pb collisions at $\sqrt{s_{NN}} = 5.02$ TeV is performed, using next-to-leading-order (NLO) thermal QCD dilepton emission rates with a multistage dynamical approach which includes event-by-event IP-Glasma initial conditions, relativistic viscous fluid dynamics, and a hadronic afterburner. Considering dilepton yield and anisotropic flow, special attention is paid to the out-of-equilibrium aspects, both thermal and chemical, and to the contribution of the Drell-Yan process. The relative contribution of each of those different channels to dilepton observables is calculated and discussed.

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Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Thermal dilepton polarization and dynamics of the QCD plasma in relativistic heavy-ion collisions

    nucl-th 2024-12 conditional novelty 7.0 of 10

    Using next-to-leading-order rates, the paper predicts that dilepton polarization changes sign and magnitude in low and intermediate invariant-mass ranges, making it a sensitive probe of gluonic processes and pre-equil...

  2. Effects of a background magnetic field on dilepton radiation

    nucl-th 2025-05 conditional novelty 6.0 of 10

    Thermal dilepton elliptic flow in 19.6 GeV Au+Au collisions is predicted to be strongly enhanced by a background magnetic field, making it a candidate probe of the QGP magnetic field strength.

  3. Effective temperatures of the QGP from thermal photon and dilepton production

    nucl-th 2024-12 conditional novelty 6.0 of 10

    In the Trajectum model, dilepton effective temperatures reliably track the quark-gluon plasma temperature, while photon effective temperatures are biased by flow and stay near 250-300 MeV.

  4. Dilepton emission in heavy ion collisions and chemical equilibrium of QCD matter

    nucl-th 2025-04 conditional novelty 5.0 of 10

    Pre-equilibrium dileptons are predicted to dominate the intermediate-mass range, and their elliptic flow is sensitive to the speed of quark formation.

  5. Electromagnetic Probes of the Quantum Chromodynamical Plasma

    nucl-th 2024-11 unverdicted

    A review of electromagnetic probes of quark-gluon plasma, summarizing recent NLO rate calculations, viscous corrections, and Bayesian outlook; no new results are presented.

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