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HK: Physik der Hadronen und Kerne

HK 40: Theorie

HK 40.6: Vortrag

Mittwoch, 9. März 2005, 15:30–15:45, TU MA005

Ab initio calculation of the ⁴He system — •Martin Trini¹, G.M. Hale², and H.M. Hofmann¹ — ¹Institute for Theoretical Physics III, University of Erlangen-Nuernberg, 91058 Erlangen, Germany — ²Los Alamos National Laboratory, Los Alamos, NM 87544, USA

We report on a consistent, microscopic calculation of the bound and scattering states in the ⁴He system. The calculations are done in the framework of the resonating group model with realistic two- and three-nucleon potentials. We compare the calculated phase shifts to a recent R-matrix analysis and to data. In addition radiative capture reactions leading to ⁴He are calculated in the long wave-length limit and compared to recent data. The overall agreement is very good. To improve on the three-nucleon forces we call for new experiments.