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arXiv · 2306.05910

Event-shape-dependent analysis of charm-anticharm azimuthal correlations in simulations

Aniko Horvath·Eszter Frajna·Robert Vertesi
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Abstract

In high-energy collisions of small systems, by high-enough final-state multiplicities, a collective behaviour is present that is similar to the flow patterns observed in heavy-ion collisions. Recent studies connect this collectivity to semi-soft vacuum-QCD processes. Here we explore QCD production mechanisms using angular correlations of heavy flavour using simulated proton-proton collisions at $\sqrt{s} = 13$~TeV with the PYTHIA8 Monte Carlo event generator. We demonstrate that the event shape is strongly connected to the production mechanisms. Flattenicity, a novel event descriptor, can be used to separate events containing the final-state radiation from the rest of the events.

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Aniko Horvath, Eszter Frajna, Robert Vertesi. 2023-06-09. Event-shape-dependent analysis of charm-anticharm azimuthal correlations in simulations. https://arxiv.org/abs/2306.05910

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