Search for the Decay Kl -> pi0 e+ e-

Preprint

12 September 2000

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ex/0009030

Abstract

We report on a search for the decay Kl -> pi0 e+ 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 CKM 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 Br(Kl -> pi0 e+ e-) < 5.1 x 10^-10 at the 90% confidence level.

Keywords

EXPECTED BACKGROUND
SIGNIFICANT CP
CP VIOLATING
VIOLATING
DECAY KL
SEARCH
PI0

All Related Versions

Version 1, 2000-09-12, ArXiv
Published version: Physical Review Letters, 86 (3), 397.

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