Photon radiation in hot nuclear matter by means of chiral anomalies

Jun 4, 2020, 1:50 PM
20m
https://cern.zoom.us/j/92876160206

https://cern.zoom.us/j/92876160206

Oral Presentation New Theoretical Developments Parallel

Speaker

Prof. Kirill Tuchin (Iowa State University)

Description

A new mechanism of photon emission in the quark-gluon plasma is proposed. Photon dispersion relation in the presence of the CP-odd topological regions generated by the chiral anomaly acquires an imaginary mass. It allows photon radiation through the decay $q→q\gamma$ and annihilation $q \bar q→\gamma$ processes closely related to the chiral Cherenkov radiation. Unlike previous proposals this mechanism does not require an external magnetic field. The differential photon emission rate per unit volume is computed and shown to be comparable to the rate of photon emission in conventional processes. The presentation is based on Phys.Rev. C99 (2019) no.6, 064907, Phys.Rev.Lett. 121 (2018) no.18, 182301.

Contribution type Contributed Talk
Track New Theoretical Developments

Primary author

Prof. Kirill Tuchin (Iowa State University)

Presentation materials