Speaker
Deke Sun
(Purdue University)
Description
With the assumption that QGP is produced, as well as that its evolution can be modeled by hydrodynamics, we calculate jet radiative energy loss in p+Pb interactions at LHC, using a frame-independent formulation of the (Djordjevic-)Gyulassy-Levai-Vitev approach. In A+A reactions we have shown that covariance matters because compared to the "vanilla" (D)GLV energy loss model it gives about 50% higher v2 for pions, and also D and B mesons, due to an interplay between jet propagation direction and collective flow of the medium. I will now present results on the nuclear modification factor (R_AA) and harmonic flow (v_n) in p+Pb collisions at LHC energies. This is especially interesting because hydrodynamics requires high opacities which should then be visible in energy loss. I will discuss whether hydrodynamics in p+A reactions can be reconciled with (D)GLV energy loss and experiments, especially in view of measurements finding R_AA close to unity but with significant v2 at modestly high pT.
Author
Deke Sun
(Purdue University)
Co-author
Denes Molnar
(Purdue University)
