ScholarMate
WeChat
Sina
Facebook
Share link
Summary
Heavy-flavor jets are powerful tools to gain insight into the in-medium partonic energy-loss mechanisms and the quark-gluon plasma's (QGP) transport properties in high-energy nuclear collisions. In this work we present the first theoretical study of the longitudinal momentum fraction z|| carried by heavy-flavor mesons in jets in Pb+Pb collisions at & RADIC;sNN = 5.02 TeV. The p+p baseline is provided by POWHEG+pYTHIA8, which matches the next-to-leading-order hard processes with the parton shower. We employ a Monte Carlo transport model, which considers the collisional and radiative partonic energy loss, to simulate the evolution of heavy-flavor jets in the expanding QGP medium. We observe steeper z|| distributions of B0 jets compared to those of D0 jets at the same kinematics region in p+p collisions, which may be a hint of the harder jet fragmentation function of b jets compared to c jets in vacuum. In A+A collisions, it is shown that the jet quenching effect would generally decrease the values of z||. We have made a systematical study on how several factors, including jet pT, jet radius R, and collision centrality, would influence the medium modification of z|| distributions of a D0 jet. In addition, we predict visibly stronger nuclear modifications of B0-jet z|| distributions compared to a D0 jet within the same pT windows as a result of the much steeper initial z|| distribution of the B0 jet in vacuum.
