Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2005-03-21
Phys.Rev.Lett.94:101804,2005
Physics
High Energy Physics
High Energy Physics - Experiment
4 pages, 5 figures, PRL paper
Scientific paper
10.1103/PhysRevLett.94.101804
A sensitive search for the rare decays \Omega^- \to \Lambda \pi^- and \Xi^0 \to p \pi^- has been performed using data from the 1997 run of the HyperCP (Fermilab E871) experiment. Limits on other such processes do not exclude the possibility of observable rates for |\Delta S| = 2 nonleptonic hyperon decays, provided the decays occur through parity-odd operators. We obtain the branching-fraction limits B(\Omega^- \to \Lambda \pi^-)< 2.9 x 10^{-6} and B(\Xi^0 \to p \pi^-)< 8.2 x 10^{-6}, both at 90% confidence level.
Burnstein Ray A.
Chakravorty Alak
Chan Anthony A.
Chen Ya-Chen
Choong W.-S.
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