Mainz 2012 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 22: Hadronenstruktur und -spektroskopie

HK 22.6: Vortrag

Mittwoch, 21. März 2012, 15:30–15:45, RW 1

Chiral SU(3)-Dynamics and Baryon-Baryon Interactions — •Stefan Petschauer, Norbert Kaiser, and Wolfram Weise — Physik-Department, Technische Universität München, D-85747 Garching, Germany

Using SU(3) chiral perturbation theory we calculate hyperon-nucleon and hyperon-hyperon interactions at next-to-leading order. The constructed potentials in momentum space include all one- and two-meson exchange terms generated by the SU(3) chiral Lagrangian. Effects from intermediate decuplet baryons are considered as well. Together with additional contact terms at the same order these chiral baryon-baryon potentials provide a new baseline for systematic studies of hyperon-nucleon scattering and light hypernuclei (few-baryon systems with strangeness).

Work supported in part by BMBF, GSI and the DFG Cluster of Excellence “Origin and Structure of the Universe”.