6533b86cfe1ef96bd12c8be3
RESEARCH PRODUCT
Thermal photons from fluctuating initial conditions
Kari J. EskolaKari J. EskolaHannu HolopainenHannu HolopainenRupa ChatterjeeThorsten RenkThorsten Renksubject
Time effectPhysicsNuclear and High Energy PhysicsParticle physicsPhoton010308 nuclear & particles physicsFOS: Physical sciences01 natural sciencesHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)0103 physical sciencesThermalAtomic physicsNuclear Experiment010306 general physicsdescription
Event-by-event fluctuations of initial QCD-matter density produced in heavy-ion collisions at RHIC enhance the production of thermal photons significantly in the region $2 \le p_T \le 4$ GeV/$c$ compared to a smooth initial-state averaged profile in the ideal hydrodynamic calculation. This enhancement is a an early time effect due to the presence of hotspots or over-dense regions in the fluctuating initial state. The effect of fluctuations is found to be stronger in peripheral than in central collisions.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-06-20 | Journal of Physics G: Nuclear and Particle Physics |