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Search for the decay K_L-> pi^0 nu nubar

J. Adams
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Abstract

We report on a search for the rare decay K_L -> pi^0 nu nubar in the KTeV experiment at Fermilab. We searched for two-photon events whose kinematics were consistent with an isolated pi^0 coming from the decay K_L -> pi^0 nu nubar. One candidate event was observed, which was consistent with the expected level of background. An upper limit on the branching ratio was determined to be B(K_L -> pi^0 nu nubar) < 1.6E-6 at the 90% confidence level.

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J. Adams. 1998-06-10. Search for the decay K_L-> pi^0 nu nubar. https://doi.org/10.1016/s0370-2693(98)01593-7

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