NUCLEAR PHYSICS: Core Polarization and Tensor Coupling Effects on Magnetic Moments of Hypernuclei
Abstract
Effects of core polarization and tensor coupling on the magnetic moments in Λ13C, Λ17O, and Λ41Ca Λ-hypernuclei are studied by employing the Dirac equation with scalar, vector and tensor potentials. It is found that the effect of core polarization on the magnetic moments is suppressed by Λ tensor coupling. The Λ tensor potential reduces the spin-orbit splitting of pΛ states considerably. However, almost the same magnetic moments are obtained using the hyperon wavefunction obtained via the Dirac equation either with or without the A tensor potential in the electromagnetic current vertex. The deviations of magnetic moments for pΛ states from the Schmidt values are found to increase with nuclear mass number.
- Publication:
-
Chinese Physics Letters
- Pub Date:
- May 2008
- DOI:
- 10.1088/0256-307X/25/5/029
- arXiv:
- arXiv:0803.3366
- Bibcode:
- 2008ChPhL..25.1629Y
- Keywords:
-
- Nuclear Theory
- E-Print:
- 10 pages, 2 figures, 2 tables