July 28, 2020 to August 6, 2020
virtual conference
Europe/Prague timezone

Isolated photon production and pion-photon correlations in high-energy pp and pA collisions

Jul 28, 2020, 8:45 PM
virtual conference

virtual conference

Talk 06. Strong Interactions and Hadron Physics Strong Interactions and Hadron Physics


Dr Michal Sumbera (Nuclear Physics Institute, Acad. of Sciences of the Czech Rep. (CZ))


A phenomenological study of the isolated photon production in high energy pp and pA collisions at RHIC and LHC energies is performed. Using the color dipole approach we investigate the productioncross section differential in the transverse momentum of the photon considering three different phenomenological models for the universal dipole cross section. We also present the predictions for the rapidity dependence of the ratio of pA/pp cross sections. As a further test of the formalism, for different energies and photon rapidites we analyse the correlation function in azimuthal angle ∆φ between the photon and a forward pion. The characteristic double-peak structure of the correlation function around ∆φ = π observed previously for Drell-Yan pair production is found for isolated photon emitted into the forward rapidity region which can be tested by future experiments.

Secondary track (number) 07

Primary authors

Dr Michal Sumbera (Nuclear Physics Institute, Acad. of Sciences of the Czech Rep. (CZ)) Roman Pasechnik (Lund university) Victor Gonçalves (Universidade Federal de Pelotas) Yuri Lima (High and Medium Energy Group, Instituto de Fisica e Matematica, Universidade Federal de Pelotas)

Presentation materials