Heidelberg 2015 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 67: Hadron Structure and Spectroscopy 12

HK 67.3: Vortrag

Donnerstag, 26. März 2015, 17:45–18:00, T/SR25

Hyperons in nuclear matter based on SU(3) chiral effective field theory — •Stefan Petschauer¹, Johann Haidenbauer², Norbert Kaiser¹, Ulf-G. Meißner^2,3, and Wolfram Weise^1,4 — ¹Technische Universität München — ²Forschungszentrum Jülich — ³Universität Bonn — ⁴ECT*, Trento, Italy

We investigate properties of hyperons in nuclear matter within conventional first-order Brueckner theory based on potentials calculated within the framework of SU(3) chiral effective field theory. The chiral potentials include contributions from one- and two-meson exchange as well as contact terms up to next-to-leading order. Promising results for the single-particle potentials of Λ and Σ hyperons in nuclear matter and pure neutron matter are found. These calculations are fundamental for a systematic study of hypernuclei and of dense baryonic matter, like neutron star matter.

This work has been supported in part by DFG and NSFC (CRC110).