Constraints on the relativistic mean field of $Δ$-isobar in nuclear matter

Details Constraints on the relativistic mean field of $Δ$-isobar in nuclear matter Constraints on the relativistic mean field of $Δ$-isobar in nuclear matter

1997-04-09

arxiv.org/abs/nucl-th/9704012v2

Phys. Lett. B421 (1998) 37-40

Physics

Nuclear Physics

Nuclear Theory

8 pages, Latex using Elsevier style, 2 PS figures, minor changes in revised version

Scientific paper

10.1016/S0370-2693(97)01598-0

The effects of the presence of $\Delta$-isobars in nuclear matter are studied in the framework of relativistic mean-field theory. The existence of stable nuclei at saturation density imposes constraints on the $\Delta$-isobar self-energy and thereby on the mean-field coupling constants of the scalar and vector mesons with $\Delta$-isobars. The range of possible values for the scalar and vector coupling constants of $\Delta$-isobars with respect to the nucleon coupling is investigated and compared to recent predictions of QCD sum-rule calculations.

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