SMuK 2023 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 58: Hadron Structure and Spectroscopy VII

HK 58.4: Vortrag

Donnerstag, 23. März 2023, 15:00–15:15, SCH/A419

ALICE determines the scattering parameters of open charm mesons with light-flavor hadrons — •Daniel Battistini for the ALICE Germany collaboration — Technical University of Munich, Munich, Germany

The strong interaction among D mesons and light-flavor hadrons was completely out of experimental reach until recently. The lack of experimental constraints on the scattering parameters of D-proton/pion/kaon poses strong limitations not only to the search of molecular states composed of charm and non-charm hadrons, but also to the study of the rescattering of charm mesons in the hadronic phase of ultrarelativistic heavy-ion collisions. The knowledge of the scattering parameters of charm hadrons with non-charm hadrons would be a crucial ingredient for models based on charm-quark transport in a hydrodynamically expanding QGP to describe the typical observables of heavy-ion collisions.

In this talk, we will report on the first measurement of the scattering parameters of open charm mesons with light-flavor hadrons. The study is carried out by the ALICE Collaboration, in high-multiplicity proton-proton collisions at √s = 13 TeV. The scattering parameters are measured employing correlation techniques and the final-state strong interaction is found to be shallow in all the channels under study.

* Funded by BMBF Verbundforschung (05P21WOCA1 ALICE).