Search for the decay K(L) --> pi(0)&mgr;(+)&mgr;(-)
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.
Alavi-Harati
A
University of Arizona, Tucson, Arizona 85721 and University of California at Los Angeles, Los Angeles, California 90095, USA.
Albuquerque
IF
Alexopoulos
T
Arenton
M
Arisaka
K
Averitte
S
Barker
AR
Bellantoni
L
Bellavance
A
Belz
J
Ben-David
R
Bergman
DR
Blucher
E
Bock
GJ
Bown
C
Bright
S
Cheu
E
Childress
S
Coleman
R
Corcoran
MD
Corti
G
Cox
B
Crisler
MB
Erwin
AR
Ford
R
Glazov
A