Search for the decay K-L -> pi(0)e(+)e(-)

Citation
A. Alavi-harati et al., Search for the decay K-L -> pi(0)e(+)e(-), PHYS REV L, 86(3), 2001, pp. 397-401
Citations number
25
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
86
Issue
3
Year of publication
2001
Pages
397 - 401
Database
ISI
SICI code
0031-9007(20010115)86:3<397:SFTDK->2.0.ZU;2-W
Abstract
We report on a search for the decay K-L --> pi (0)e(+)e(-) carried out by t he KTeV/E799 experiment. at Fermilab. This decay is expected to have a sign ificant CP violating contribution and the measurement of its branching rati o 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 back ground of 1.06 +/- 0.41 events, and we set an upper limit B(K-L --> pi (0)e(+)e(-)) <5.1 X 10(-10) at the 90% confidence level.