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.
Medium effects for hadron-tagged jets in proton-proton collisions
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abstract
We study the medium modification factor $I_{pp}$ within the light-cone path integral approach to induced gluon emission. We use parametrization of the running coupling $\alpha_s(Q,T)$ which has a plateau around $Q\sim \kappa T$. We calculate $I_{pp}$ with no free parameters using $\kappa$ fitted to the LHC data on the nuclear modification factor $R_{AA}$. We find that the theoretical multiplicity dependence of the ratio $I_{pp}/\langle I_{pp}\rangle$ for $5.02$ TeV $pp$ collisions agrees reasonably with the recent preliminary data from ALICE [1].
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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.