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Reanalysis of hyperon beta decay data on $F/D$

B. ~Ehrnsperger·A. ~Schäfer
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Abstract

We reanalyse hyperon beta decay data to extract the corresponding F and D values. We show that flavour symmetry breaking effects lead naturally to a reduction of the $F/D$ ratio. For proton and neutron our analyses suggests $F/D = 0.49 \pm 0.08$ instead of $F/D = 0.575 \pm 0.016$ which is generally used to analyse the spin data. Our smaller $F/D$ value allows to fullfil the Ellis--Jaffe sum rule implying an unpolarized $s\bar s$-sea.

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B. ~Ehrnsperger, A. ~Schäfer. 1994-11-11. Reanalysis of hyperon beta decay data on $F/D$. https://doi.org/10.1016/0370-2693(95)00204-x

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