Darmstadt 2016 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 42: Structure and Dynamics of Nuclei IX

HK 42.6: Vortrag

Mittwoch, 16. März 2016, 17:45–18:00, S1/01 A03

Effective Field Theory for the Λnn System — •Fabian Hildenbrand and Hans-Werner Hammer — Institut für Kernphysik, TU Darmstadt, 64289 Darmstadt, Germany

Because of the recent results from the HypHI collaboration at GSI, the question of whether the Λnn system is bound or not has received considerable interest recently. We construct an effective field theory for the Λnn system without explicit pions. An asymptotic analysis of the resulting scattering equations reveals that a Λnn three-body force is required for consistent renormalization. In this talk, we present first results of our analysis with a special focus on the sensitivity on the neutron-neutron-scattering length.

*This work has been supported by the BMBF under grant 05P15 RDFN1.