Measurement of $\mathrm{b}$ jet shapes in pp collisions at $\sqrt{s} = 5.02~\mathrm{TeV}$

We present the first study of the charged hadron production associated with $\mathrm{b}$ jets in 5.02 TeV pp collisions. The data sample used in this study was collected with the CMS detector at the LHC and corresponds to an integrated luminosity of 27.4 $\mathrm{pb}^{-1}$. The differential jet shapes, defined as the normalized transverse momentum flow of charged hadrons with respect to the angular distance from the jet axis, are measured for b jets via the jet-track correlation method. In addition to the jet shapes, the per-jet yields of charged particles associated with b jets are also quantified, again as a function of the angular distance with respect to the jet axis. Extracted jet shape and particle yield distributions for $\mathrm{b}$ jets are compared with results for inclusive jets, as well as with predictions from the PYTHIA event generator. The new results reveal a deficiency in the modeling of softer part of the jet fragmentation for both types of jets studied and set a baseline for future studies of parton flavor dependence of jet-medium interactions in heavy ion collisions.