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arXiv · hep-ph/9606270

Isoscalar NN spin-orbit potential from a Skyrme model with scalar mesons

Abdellatif Abada
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Abstract

As a first step toward circumventing the difficulty to obtain an attractive isospin-independent NN spin-orbit force from Skyrme-type models involving only pions, we investigate an improved Skyrme Lagrangian that incorporates the scalar-isoscalar meson εwhich can be viewed as the cause behind the enhancement of the $ππS$-wave. We find that at large distances, the main contribution to the spin-orbit potential comes from the scalar Lagrangian and it is found to be attractive. We briefly discuss how to pursue this work to finally obtain a medium-range attractive interaction.

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Abdellatif Abada. 1997-01-24. Isoscalar NN spin-orbit potential from a Skyrme model with scalar mesons. https://doi.org/10.1007/s002180050280

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