Search for the decay K L → π 0 ? + ? -
Journal
Physical Review Letters
Journal Volume
84
Journal Issue
23
Pages
5279-5282
Date Issued
2000
Author(s)
Alavi-Harati, A. et al.
Abstract
We report on a search for the decay K(L)-->pi(0)&mgr;(+)&mgr;(-) 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)&mgr;(+)&mgr;(-))<3. 8x10(-10) at the 90% confidence level.
Type
journal article