Observation of the Decay Xi^0 --> Sigma^+ mu^- nu(bar)

Details Observation of the Decay Xi^0 --> Sigma^+ mu^- nu(bar) Observation of the Decay Xi^0 --> Sigma^+ mu^- nu(bar)

2005-04-27

arxiv.org/abs/hep-ex/0504055v2

Phys.Rev.Lett.95:081801,2005

Physics

High Energy Physics

High Energy Physics - Experiment

4 pages, 4 figures; changed authors list, figure added

Scientific paper

10.1103/PhysRevLett.95.081801

The Xi^0 muon semi-leptonic decay has been observed for the first time with
nine identified events using the KTeV beam line and detector at Fermilab. The
decay is normalized to the Xi^0 beta decay mode and yields a value for the
ratio of decay rates of $(1.8^{+0.7}_{-0.5}(stat.)\pm0.2(syst.))\times
10^{-2}$. This is in agreement with the SU(3) flavor symmetric quark model.

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