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München 2019 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 12: Structure and Dynamics of Nuclei II

HK 12.3: Talk

Monday, March 18, 2019, 17:00–17:15, HS 14

Structure of 6He in Halo EFT — •Matthias Göbel1, Daniel R. Phillips2,3, and Hans-Werner Hammer1,31Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany — 2Institute of Nuclear and Particle Physics and Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA — 3ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany

The Borromean two-neutron halo 6He with its scale separations is well suited to a treatment in Halo EFT with the neutrons (n) and the α core as degrees of freedom. The s-wave nn interaction and the 2P3/2 α n interaction as well as a three-body force are employed in our leading order analysis.

Using the Faddeev equations, the leading order results of Ji, Elster and Phillips (see Phys. Rev. C 90 (2014) 044004) for the Faddeev amplitudes are reproduced. Based on these amplitudes, we study the structure of 6He by calculating the momentum space probability density as seen with different spectator particles. Moreover, the results for the nn relative energy distribution will be presented.

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