First D⁰-tagged jet axes difference measurement in pp collisions at √s = 5.02 TeV with ALICE

Measurements of heavy-flavor hadron production play an important role in the testing of pQCD calculations, and represent a critical component in studies of the quark-gluon plasma (QGP) created in heavy-ion collisions. We study two different D⁰-tagged jet axes, with varying degrees of sensitivity to wide-angle radiation: Standard (STD) and Winner-Take-All (WTA). By considering the angles between different axes, we can study the radiation pattern inside the reconstructed jets, thus providing insight into the associated fragmentation and hadronization processes. We present the D⁰-tagged jet axes difference measurement carried out in pp collisions at 5.02 TeV with the ALICE experiment at the LHC, with jets of transverse momentum p_T,jet > 5 GeV/c and D⁰-mesons with p_T,D⁰ > 2 GeV/c; namely, the radial distribution of D⁰-mesons with respect to the Standard jet axis, ΔR_STD-D, and compare this to the inclusive, gluon-dominated result for the opening angle, ΔR_STD-WTA, between the Standard and Winner-Take-All definitions for the jet axis of a D⁰-tagged jet. This measurement, at relatively low jet momentum, is sensitive to heavy-flavor production mechanisms and will serve as important groundwork for an in-depth understanding of charm-quark diffusion in the QGP.