skip to main content

DOE PAGESDOE PAGES

This content will become publicly available on February 1, 2017

Title: A tale of tails: Photon rates and flow in ultra-relativistic heavy ion collisions

We consider the possibility that quark and gluon distributions in the medium created in high energy heavy ion collisions may be modified by a power law tail at energies much higher than the temperature. We parametrize such a tail by Tsallis distributions with an exponent motivated by phenomenology. These distributions are characterized by an effective temperature scale that we assume to evolve in time like the temperature for thermal distributions. We find that including such a tail increases the rates for photon production and significantly delays the emission times for photons of a fixed energy. Finally, we argue that these effects should modify photon yields and flow patterns in a way that will help the agreement of theoretical calculations with data from LHC and RHIC experiments.
Authors:
;
Publication Date:
OSTI Identifier:
1246808
Report Number(s):
BNL--112001-2016-JA
Journal ID: ISSN 0375-9474; R&D Project: 08870; KB0301020
Grant/Contract Number:
SC00112704
Type:
Accepted Manuscript
Journal Name:
Nuclear Physics. A
Additional Journal Information:
Journal Volume: 946; Journal Issue: C; Journal ID: ISSN 0375-9474
Publisher:
Elsevier
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS