SMuK 2021 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 4: Hadron Structure and Spectroscopy I

HK 4.5: Vortrag

Montag, 30. August 2021, 17:45–18:00, H3

Prospects for a Partial Wave Analysis of the Ξ Λ K⁻ Final State at PANDA — •Jennifer Pütz and James Ritman for the PANDA collaboration — GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany

For a deep insight into the mechanisms of non-perturbative QCD it is essential to understand the excitation pattern of baryons. Up to now only the nucleon excitation spectrum has been subject to systematic experimental studies while very little is known about the excited states of double or triple strange baryons.
In studies of antiproton-proton collisions the PANDA experiment is well-suited for a comprehensive baryon spectroscopy program in the multi-strange sector. A large fraction of the inelastic pp cross section is associated to final states with a baryon-antibaryon pair together with additional mesons, giving access to excited states both in the baryon and the antibaryon channel.
In earlier Monte Carlo studies, it has been demonstrated that with an expected cross section in the order of µb PANDA will be able to observe the Ξ⁺ Λ K⁻ channel with a negligible background contribution. In this study, the feasibility of PANDA to determine the mass, width, spin and parity of two specific Ξ resonances, Ξ(1690) and Ξ(1820), is investigated by making use of a partial wave analysis employing the PAWIAN framework.