LHC light-ion R_AA measurements could discriminate between scenarios with and without mini-QGP formation in pp collisions, with the largest difference predicted for carbon.
Parton energy loss in an expanding quark-gluon plasma: Radiative vs collisional
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We perform a comparison of the radiative and collisional parton energy losses in an expanding quark-gluon plasma. The radiative energy loss is calculated within the light-cone path integral approach. The collisional energy loss is calculated using the Bjorken method with an accurate treatment of the binary collision kinematics. Our numerical results demonstrate that for RHIC and LHC conditions the collisional energy loss is relatively small in comparison to the radiative one. We find an enhancement of the heavy quark radiative energy loss as compared to that of the light quarks at high energies.
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Predictions for $R_{AA}$ in 5.36 TeV C+C, O+O, and Ne+Ne collisions at the LHC
LHC light-ion R_AA measurements could discriminate between scenarios with and without mini-QGP formation in pp collisions, with the largest difference predicted for carbon.