Extracting jet transport coefficient via single hadron and dihadron productions in high-energy heavy-ion collisions

We study the suppressions of high transverse momentum single hadron and dihadron productions in high-energy heavy-ion collisions based on the framework of a next-to-leading-order perturbative QCD parton model combined with the higher-twist energy loss formalism. Our model can provide a consistent description for the nuclear modification factors of single hadron and dihadron productions in central and non-central nucleus-nucleus collisions at RHIC and the LHC energies. We quantitatively extract the value of jet quenching parameter q via a global chi 2 analysis, and obtain qT3=4.1-4.4 at T=378MeV at RHIC and q=2.6-3.3 at T=486MeV at the LHC, which are consistent with the results from JET Collaboration. We also provide the predictions for the nuclear modification factors of dihadron productions in Pb+Pb collisions at = 5.02 TeV and in Xe+Xe collisions at = 5.44 TeV.