In a magnetized QGP described by Gubser flow, decay-channel dileptons show a v2 sign flip that is independent of impact parameter and conductivity, offering a new probe of electromagnetic fields.
Effects of a background magnetic field on dilepton radiation
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abstract
We explore the feasibility of using dilepton radiations as a QGP magnetometer. We calculate the dilepton production rate in the presence of a time-dependent magnetic field typically found in heavy-ion collisions. We compute the thermal dilepton spectra from Au+Au collisions at $\sqrt s$ = 19.6 GeV BES energy -- using a realistic (3+1)-dimensional multistage hydrodynamic simulation. We find the thermal dilepton elliptic flow to be very sensitive to the strength of the magnetic field.
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Dilepton Spectra and Even Flow Harmonics in a Magnetized QGP: An Ideal Hydrodynamic Study
In a magnetized QGP described by Gubser flow, decay-channel dileptons show a v2 sign flip that is independent of impact parameter and conductivity, offering a new probe of electromagnetic fields.