Spin structure of the octet baryons

Details Spin structure of the octet baryons Spin structure of the octet baryons

2000-07-04

arxiv.org/abs/hep-ph/0007022v1

ActaPhys.Polon.B32:1343-1364,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

Scientific paper

We analyze the semileptonic weak decays of the octet baryons in a "{\em model independent}" approach, based on the algebraic structure of the Chiral Quark-Soliton Model. We argue that this analysis is in fact more general than the model itself. While the symmetry breaking for the semileptonic decays themselves is not strong, other quantities like $\Delta s$ and $\Delta \Sigma$ are much more affected. We calculate $\Delta \Sigma$ and $\Delta q$ for all octet baryons. Unfortunately, large experimental errors of $\Xi^-$ decays propagate in our analysis, in particular, in the case of $\Delta\Sigma $ and $\Delta s$. Only if the errors for these decays are reduced, the accurate theoretical predictions for $\Delta\Sigma$ and $\Delta s$ will be possible.

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