Strange Neutral Currents in Nuclei
M. T. Ressell, G. J. Mathews, M. B. Aufderheide. S. D. Bloom, D. A. Resler
Abstract
We examine the effects on the nuclear neutral current Gamow-Teller (GT) strength of a finite contribution from a polarized strange quark sea. We perform nuclear shell model calculations of the neutral current GT strength for a number of nuclei likely to be present during stellar core collapse. We compare the GT strength when a finite strange quark contribution is included to the strength without such a contribution. As an example, the process of neutral current nuclear de-excitation via νν pair production is examined for the two cases.
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