| Issue |
EPJ Web Conf.
Volume 296, 2024
30th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (Quark Matter 2023)
|
|
|---|---|---|
| Article Number | 09018 | |
| Number of page(s) | 4 | |
| Section | Heavy Flavor | |
| DOI | https://doi.org/10.1051/epjconf/202429609018 | |
| Published online | 26 June 2024 | |
https://doi.org/10.1051/epjconf/202429609018
Heavy-flavor transport and hadronization in a small fireball
1 INFN - Sezione di Torino, via Pietro Giuria 1, IT-10125 Torino
2 Departamento de Física, Universidad de Oviedo, Avda. Federico García Lorca 18, ES-33007 Oviedo
3 Instituto Universitario de Ciencias y Tecnologías Espaciales de Asturias (ICTEA), Calle de la Independencia 13, ES-33004 Oviedo
* e-mail: beraudo@to.infn.it
Published online: 26 June 2024
We study heavy-flavor hadron production in high-energy pp collisions, assuming the formation of a small, deconfined and expanding fireball where charm quarks can undergo rescattering and hadronization. We adopt the same in-medium hadronization mechanism developed for heavy-ion collisions, which involves Local Color-Neutralization (LCN) through recombination of charm quarks with nearby opposite color charges from the background fireball. Diquark excitations in the hot medium favor the formation of charmed baryons. The recombination process, involving closely aligned partons from the same fluid cell, effectively transfers the collective flow of the system to the final charmed hadrons. This framework can qualitatively reproduce the observed experimental findings in heavy-flavor particle-yield ratios, pT -spectra and ellipticflow coefficients. Our results provide new, complementary support to the idea that the collective phenomena observed in small systems have the same origin as those observed in heavy-ion collisions.
© The Authors, published by EDP Sciences, 2024
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