# 10th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions

May 31, 2020 to June 5, 2020
Online
US/Central timezone

## PHENIX results on direct photon production from Au+Au collisions

Jun 1, 2020, 12:00 PM
20m
https://cern.zoom.us/j/91030448357

#### https://cern.zoom.us/j/91030448357

Oral Presentation Electroweak Probes

### Speaker

Veronica Canoa Roman

### Description

PHENIX measurements of low $p_T$ direct photons in Au+Au collisions at 200
GeV show large yields that have simultaneously a large anisotropies with
respect to the reaction plane, and that scale with the charged multiplicity
to a power of 5/4, independent of  transverse momentum and collision
centrality. Calculations of thermal photon emission fall short in describing
these three features. Furthermore, a recent publication of the STAR
collaboration indicates lower direct photon yields in Au+Au collisions than
observed by PHENIX.  In order to provide new PHENIX has shown first results
from Au+Au data taken in 2014. These data have 10 fold statistics compared
to published results. In this talk we will show the latest direct photon
results from this data set.

Contribution type Contributed Talk PHENIX Electroweak Probes

### Primary author

Gabor David (Brookhaven National Laboratory)

### Presentation materials

 HP2019_Dphotons.pdf Recording