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We present results of a detailed analysis of experimental data on the nuclearmodification factor $R_{AA}$ and the flow coefficient $v_2$ for light hadronsfrom RHIC for $0.2$ TeV Au+Au collisions and from LHC for $2.76$ and $5.02$ TeVPb+Pb, and $5.44$ TeV Xe+Xe collisions. We perform calculations within thelight-cone path integral approach to induced gluon emission. We use running$\alpha_s$ which is frozen at low momenta at some value $\alpha_{s}^{fr}$. Wefind that the RHIC data support somewhat larger value of $\alpha_{s}^{fr}$. Forthe $\chi^2$ optimized values of $\alpha_{s}^{fr}$, the theoretical predictionsare in reasonable agreement with data on $R_{AA}$ and $v_2$. Calculations madefor different formation times and life-times of the QGP show that jet quenchingat the RHIC and LHC energies is only weakly sensitive to the initial and finalstages of the QCD matter evolution.

Updated analysis of jet quenching at RHIC and LHC within the light cone path integral approach