Speaker
Description
Electromagnetic radiation, from both photons and dileptons, serves as exceptional probes of the evolution of relativistic heavy-ion collisions as unlike hadronic particles, these are produced throughout the evolution of the collision and escape the medium unmodified, providing direct information about the early and hot stages of the system. Photons primarily originate from initial hard scatterings, thermal radiation from the QGP, and interactions in the hadronic phase, while dileptons offer a mass-dependent view of the thermal properties of the medium. Recent experimental efforts, combined with advancements in theoretical models, have improved our understanding of electromagnetic radiation as a sensitive tool for probing the QGP. In addition to the measurements of dilepton mass distributions, and the direct photon momentum spectra for small and large collision systems, in this talk, azimuthal anisotropies of direct photons in relativistic heavy-ion collisions will be presented, thereby shedding light on the long-standing direct photon puzzle.
