Speaker
Akihiko Monnai
(Japan Women's University)
Description
Direct photons are a powerful tool to study the properties of QCD matter in nuclear collisions. We investigate the contribution of pre-equilibrium photons before hydrodynamization in addition to those of conventional prompt and thermal photons to obtain a comprehensive picture of direct photon emission in the hybrid model based on relativistic hydrodynamics [1]. Numerical simulations at an LHC energy suggest that the pre-equilibrium photons can be important at intermediate transverse momentum near the saturation momentum scale, increasing particle spectra and reducing elliptic flow of direct photons.
[1] A. Monnai, J. Phys. G: Nucl. Part. Phys 47, 075105 (2020)
Primary author
Akihiko Monnai
(Japan Women's University)
