SU(3) Breaking in Hyperon Beta Decays: a Prediction for Xi0 -> Sigma+ e anti-neutrino

Details SU(3) Breaking in Hyperon Beta Decays: a Prediction for Xi0 -> Sigma+ e anti-neutrino SU(3) Breaking in Hyperon Beta Decays: a Prediction for Xi0 -> Sigma+ e anti-neutrino

1998-07-16

arxiv.org/abs/hep-ph/9807394v1

Nucl.Phys.Proc.Suppl. 75B (1999) 60-62

Physics

High Energy Physics

High Energy Physics - Phenomenology

Presented at the III Int. Conf. on Hyperons, Charm and Beauty Hadrons (Genova, June-July 1998). 3 pages, LaTeX2e, uses fleqn,

Scientific paper

10.1016/S0920-5632(99)00325-4

SU(3) breaking in hyperon semi-leptonic decays is discussed. The SU(3)
parameters $F$ and $D$, relevant to the ``proton-spin puzzle'', are extracted
and a prediction is presented for the decay Xi0 -> Sigma+ e anti-neutrino,
currently under study by the KTeV collaboration. The values found are g1/f1 =
1.16+/-0.03+/-0.01 and Gamma = (0.80+/-0.03+/-0.01) x 10^6 s^-1.

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