ИСТИНА

The LHC data on various jet observables in PbPb collisions at center-of-mass energy 2.76 TeV per nucleon pair are analyzed and interpreted in the frameworks of PYQUEN jet quenching model. Experimentally measured momentum-dependence of nuclear modification factors for inclusive jets and b-jets are reproduced by the model. A specific modification of longitudinal and radial jet profiles observed in most central PbPb collisions as compared with pp data is close to that obtained with PYQUEN simulations taking into account wide-angle radiative and collisional partonic energy loss. In spite of the contribution from wide-angle radiative loss to the medium-modified intra-jet structure is found to dominate, taking into account collisional loss is also necessary to match the data.