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Measurements in heavy-flavour azimuthal angular correlation provide insightinto the production, propagation, and hadronization of heavy-flavour jets inultra-relativistic hadronic and heavy-ion collisions. These measurements acrossdifferent particle species help to isolate the possible modification inparticle production and fragmentation due to different mass and quark contents.Jet correlation studies give direct access to the initial parton dynamicsproduced in these collisions. \\ This article studies the azimuthal angularcorrelations of heavy-flavour hadrons (charm and beauty mesons and charmbaryons) in pp collisions at $\sqrt{s} =$ 7 TeV using PYTHIA8. We study theproduction of heavy-flavour jets with different parton-level processes,including multi-parton interactions and different color reconnectionprescriptions. The heavy-flavour hadrons correlations are calculated in thedifferent triggers and associated \pt intervals to characterize the impact ofhard and soft scattering. The yields and the widths associated with thenear-side (NS) and away-side (AS) correlation peaks are calculated and studiedas a function of associated \pt for different trigger \pt ranges.

Jet fragmentation via azimuthal angular correlations of heavy-flavours in $pp$ collisions at $\sqrt{s} = $ 7 TeV