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

- Institution: CERN
- Department: Conferences
- Speaker: Veronica Canoa Roman
- Year: 2020
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3004062)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

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..

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## Lectures

1. [PHENIX results on direct photon production from Au+Au collisions](https://invisiblenetwork.ai/learn/cern/3004062/bac7e9a7c31e), 18 min (CERN's player)