Spectroscopy of Medium to Heavy Single $Λ$-Hypernuclei

Details Spectroscopy of Medium to Heavy Single $Λ$-Hypernuclei Spectroscopy of Medium to Heavy Single $Λ$-Hypernuclei

2005-07-03

arxiv.org/abs/nucl-th/0507006v1

Physics

Nuclear Physics

Nuclear Theory

20 pages, 7 figures

Scientific paper

We develop a method for calculating the doublet splittings of select ground-state single $\Lambda$-hypernuclei. This hypernuclear spectroscopy is conducted by supplementing the self-consistent single-particle equations with an effective interaction, which follows directly from the underlying lagrangian,to simulate the residual particle-hole interaction. Our previous investigation, performed using only the leading-order contributions to the particle-hole interaction, was inadequate. In the present work, this method is improved upon by increasing the level of truncation in the residual interaction to include gradient coupling to the neutral vector meson, and thereby incorporating the tensor force into the calculation (which is known to play a crucial role in these systems). As a result, we obtain a realistic description of the effect of the tensor coupling on the doublet orderings and splittings.

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