Search for the Decay KL π0 μ+ μ-
Abstract
We report on a search for the decay carried out as a part of the KTeV experiment at Fermilab. This decay is expected to have a significant CP violating contribution and a direct measurement will either support the CKM mechanism for CP violation or point to new physics. Two events were observed in the 1997 data with an expected background of 0.87 0.15 events, and we set an upper limit <3.8 × 10-10 at the 90% confidence level.
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