SMuK 2023 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 68: Hadron Structure and Spectroscopy IX

HK 68.2: Vortrag

Donnerstag, 23. März 2023, 16:15–16:30, SCH/A419

Hyperon-production studies in proton-proton collisions at 4.5 GeV with HADES — •Snehankit Pattnaik, Johan Messchendorp, and James Ritman for the HADES collaboration — GSI, Darmstadt, Germany

This work presents a preliminary analysis of the Λ + K_S⁰ + p + π⁺ final state in recently collected proton-proton scattering data taken at 4.5 GeV using HADES at GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt, Germany. The production of hyperons is of particular interest since it provides information about the role of N* resonances in strangeness production in NN interactions. Furthermore, this study could be relevant in describing the dynamics of high-dense matter such as that located at the core of neutron stars.

This talk will present some of the data-driven analysis procedures that have been used to select the final-state of interest. In particular, a particle identification method exploiting the relative time-of-flights and utilizing several vertex and kinematical observables have been used to obtain a strong signal for this exclusive state.