Search for the Decay KLπ0e+e

A. Alavi-Harati et al. (KTeV Collaboration)
Phys. Rev. Lett. 86, 397 – Published 15 January 2001
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Abstract

We report on a search for the decay KLπ0e+e carried out by the KTeV/E799 experiment at Fermilab. This decay is expected to have a significant CP violating contribution and the measurement of its branching ratio could support the Cabibbo-Kobayashi-Maskawa mechanism for CP violation or could point to new physics. Two events were observed in the 1997 data with an expected background of 1.06±0.41 events, and we set an upper limit B(KLπ0e+e)<5.1×1010 at the 90% confidence level.

  • Received 11 September 2000

DOI:https://doi.org/10.1103/PhysRevLett.86.397

©2001 American Physical Society

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Vol. 86, Iss. 3 — 15 January 2001

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