Jet-triggered photons from back-scattering kinematics for quark gluon plasma tomography
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2014 American Physical Society. High energy photons created from back-scattering of jets in quark gluon plasma are a valuable probe of the temperature of the plasma, and of the energy loss mechanism of quarks in the plasma. An unambiguous identification of these photons through single-inclusive photon measurements and photon azimuthal anisotropies has so far been elusive. We estimate the spectra of back-scattering photons in coincidence with trigger jets for typical kinematic situations at the Large Hadron Collider and the BNL Relativistic Heavy Ion Collider. We find that the separation of back-scattering photons from other photon sources using trigger jets depends crucially on our ability to reliably estimate the initial trigger-jet energy. We estimate that jet-reconstruction techniques in heavy ion experiments need to be able to get to jet RAA.7 in central collisions for viable back-scattering signals.
author list (cited authors)
De, S., Fries, R. J., & Srivastava, D. K.
complete list of authors
De, Somnath||Fries, Rainer J||Srivastava, Dinesh K