Thermal dilepton production in heavy-ion collisions at beam-energy-scan (BES) energies

¹ Department of Physics, McGill University, 3600 University street, Montreal, QC, Canada H3A 2T8
² SUBATECH, Université de Nantes, IMT Atlantique, IN2P3/CNRS, 4 rue Alfred Kastler, La Chantrerie BP 20722, 44307 Nantes, France

^* e-mail: jessica.churchill@mail.mcgill.ca
^** e-mail: lipei.du@mail.mcgill.ca
^*** e-mail: bailey.forster@mail.mcgill.ca
^**** e-mail: han.gao3@mail.mcgill.ca
^† e-mail: jackson@subatech.in2p3.fr
^‡ e-mail: sangyong.jeon@mcgill.ca
^§ Speaker, e-mail: charles.gale@mcgill.ca

Published online: 26 June 2024

Abstract

The lepton pair production rate at finite temperature and at nextto-leading-order (NLO) is calculated for quark-gluon plasma at non-zero net baryon density. Yields are obtained using a (3+1)D multicomponent simulation capable of reproducing hadronic observables measured in the RHIC Beam Energy Scan (BES). Spectra of intermediate invariant mass dileptons are compared with measurements from the STAR collaboration. The result of a study where the temperature information obtained from the dilepton spectrum from heavyion collisions performed at different energies and centralities is presented.