Direct photon spectra in Pb-Pb at sqrt(s) = 5.5 TeV: hydrodynamics+pQCD predictions
Francois Arleo, David d'Enterria, Dmitri Peressounko
TL;DR
This paper predicts the transverse momentum spectra of direct photons in Pb-Pb collisions at 5.5 TeV using hydrodynamics and pQCD, combining thermal and prompt photon sources.
Contribution
It provides the first combined hydrodynamics and pQCD prediction for direct photon spectra at LHC energies.
Findings
Thermal photons dominate at low transverse momentum.
Prompt photons become significant at high transverse momentum.
Predicted spectra can guide future experimental measurements.
Abstract
The transverse momentum spectra for direct photons produced in Pb-Pb collisions at the LHC, including thermal (hydrodynamics) and prompt (pQCD) emissions are presented.
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Taxonomy
TopicsHigh-Energy Particle Collisions Research · Particle physics theoretical and experimental studies · Quantum Chromodynamics and Particle Interactions