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

Citation
A. Alavi-harati et al., Search for the decay K-L ->pi(0) mu(+) mu(-), PHYS REV L, 84(23), 2000, pp. 5279-5282
Citations number
21
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
84
Issue
23
Year of publication
2000
Pages
5279 - 5282
Database
ISI
SICI code
0031-9007(20000605)84:23<5279:SFTDK->2.0.ZU;2-3
Abstract
We report on a search for the decay K-L --> pi(0)mu(+)mu(-) 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 Cabibbo-Kobayashi-Maskawa 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 B (K-L --> pi (0)mu(+)mu(-)) < 3.8 X 10(-10) at the 90% confidence level.