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].
Categories: hep-ph nucl-th