The tricky azimuthal dependence of jet quenching at RHIC and LHC via CUJET2.0

High transverse momentum neutral pion and charged hadron suppression pattern with respect to reaction plane at RHIC and LHC energies in central and semi-peripheral AA collisions are studied in a perturbative QCD based model, CUJET2.0. CUJET2.0 has dynamical DGLV radiation kernel and Thoma–Gyulassy elastic energy loss, with both being generalized to including multi-scale running strong coupling as well as energy loss probability fluctuations, and the full jet path integration is performed in a low pTpT flow data constrained medium which has 2+1D viscous hydrodynamical expanding profile. We find that in CUJET2.0, with only one control parameter, αmaxαmax, the maximum coupling strength, fixed to be 0.26, the computed nuclear modification factor RAARAA in central and semi-peripheral AA collisions are consistent with RHIC and LHC data at average χ2/d.o.f.<1.5χ2/d.o.f.<1.5 level. Simultaneous agreements with high pTpT azimuthal anisotropy v2v2 data are acquired given average αmaxαmax over in-plane and out-of-plane paths varying as little as 10%, suggesting a non-trivial dependence of the high pTpT single particle v2v2 on the azimuthally varied strong coupling.