Electromagnetic radiation by quark-gluon plasma in magnetic field

TL;DR

This paper calculates electromagnetic radiation emitted by quark-gluon plasma in strong magnetic fields, highlighting synchrotron radiation as a dominant process in heavy-ion collisions and its potential to resolve experimental-theoretical discrepancies.

Contribution

It introduces a detailed calculation of electromagnetic radiation processes in quark-gluon plasma under magnetic fields, emphasizing the significance of synchrotron radiation.

Findings

Synchrotron radiation dominates over annihilation in heavy-ion collisions.

Radiation magnitude depends on plasma temperature and magnetic field strength.

Electromagnetic radiation may explain discrepancies between models and experiments.

Abstract

The electromagnetic radiation by quark-gluon plasma in strong magnetic field is calculated. The contributing processes are synchrotron radiation and one--photon annihilation. It is shown that in relativistic heavy--ion collisions at RHIC and LHC synchrotron radiation dominates over the annihilation. Moreover, it constitutes a significant part of all photons produced by the plasma at low transverse momenta; its magnitude depends on the plasma temperature and the magnetic field strength. Electromagnetic radiation in magnetic field is probably the missing piece that resolves a discrepancy between the theoretical models and the experimental data. It is argued that electromagnetic radiation increases with the magnetic field strength and plasma temperature.