Self-Energy of Decuplet Baryons in Nuclear Matter

Details Self-Energy of Decuplet Baryons in Nuclear Matter Self-Energy of Decuplet Baryons in Nuclear Matter

1997-02-26

arxiv.org/abs/hep-ph/9702422v1

Phys.Lett. B404 (1997) 108-114

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 2 eps figures, REVTeX

Scientific paper

10.1016/S0370-2693(97)00540-6

We calculate, in chiral perturbation theory, the change in the self-energy of decuplet baryons in nuclear matter. These self-energy shifts are relevant in studies of meson-nucleus scattering and of neutron stars. Our results are leading order in an expansion in powers of the ratio of characteristic momenta to the chiral symmetry-breaking scale (or the nucleon mass). Included are contact diagrams generated by 4-baryon operators, which were neglected in earlier studies for the $\Delta$ isomultiplet but contribute to the self-energy shifts at this order in chiral perturbation theory.

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