PoS - Proceedings of Science
Volume 387 - 10th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions (HardProbes2020) - Flash Talk
Untangling the evolution of heavy ion collisions using direct photon interferometry
O. Garcia Montero*, N. Löher, A. Mazeliauskas, K. Reygers and J. Berges
Full text: pdf
Published on: September 01, 2021
Recently, two scenarios have been proposed to resolve the discrepancy between photon yield and the flow coefficients measured in nuclear collisions at RHIC and the LHC. In the first, additional photons are produced from the early pre-equilibrium stage computed from the "bottom-up" thermalization scenario. In the second, the thermal rates are enhanced close to the pseudo-critical temperature $T_c \sim$ 155MeV using a phenomenological ansatz. We investigate the measurement of Hanbury Brown-Twiss (HBT) photon correlations as an experimental tool to discriminate between such scenarios. By enhancing standard hydrodynamical simulations with these scenarios, we compute the correlators in terms of the relative momenta of the pair for different values of its transverse momenta, $K_\perp$ We find that the longitudinal correlation is the most sensitive to different photon sources.
DOI: https://doi.org/10.22323/1.387.0033
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.