Further search for the decay K+-->pi(+)nunu;
A search for additional evidence for the rare kaon decay K+-->pi(+)nunu; has been made with a new data set comparable in sensitivity to the previous exposure that produced a single event. No new events were found in the pion momentum region examined, 211<P<229 MeV/c. Including a reanalysis of the original data set, the backgrounds were estimated to contribute 0.08+/-0.02 events. Based on one observed event, the new branching ratio is B(K+-->pi(+)nunu;) = 1.5(+3.4)(-1.2)x10(-10).
Adler
S
Brookhaven National Laboratory, Upton, New York 11973, USA.
Atiya
MS
Chiang
IH
Diwan
MV
Frank
JS
Haggerty
JS
Jain
V
Kettell
SH
Kycia
TF
Li
KK
Littenberg
LS
Ng
C
Strand
RC
Witzig
C
Kazumori
M
Komatsubara
TK
Kuriki
M
Muramatsu
N
Otomo
A
Sugimoto
S
Inagaki
T
Kabe
S
Kobayashi
M
Kuno
Y
Sato
T
Shinkawa
T