Connection of event shapes to the heavy-flavor baryon enhancement

Róbert Vértesi; Zoltán Varga

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arXiv · 2402.01234

Connection of event shapes to the heavy-flavor baryon enhancement

Róbert Vértesi·Zoltán Varga

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Abstract

Recent results from ALICE and CMS show a low-transverse-momentum enhancement of charm baryon-to-meson production ratios over model predictions based on $e^+e^-$ collisions. This new development challenges the universality of fragmentation. We studied the charm-baryon enhancement in collision events generated by PYTHIA 8 and applied a color-reconnection model beyond leading color approximation. We proposed a measurement method based on several event-activity classifiers, to identify the origin of the charm-baryon enhancement. In this work we extend our studies to a new event classifier, flattenicity, that considers a broad pseudorapidity range. We have also studied the role of isospin and strangeness by comparing the production of different charmed baryons. The observables we explored provide a unique opportunity in the upcoming measurements from the high-luminosity LHC Run 3 period to better understand heavy-flavor fragmentation mechanisms, and will help the further development of models.

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Róbert Vértesi, Zoltán Varga. 2024-02-02. Connection of event shapes to the heavy-flavor baryon enhancement. https://arxiv.org/abs/2402.01234

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