Measurement of direct photon emission in K+-->pi(+)pi(0)gamma decay
We have performed a measurement of the K+-->pi(+)pi(0)gamma decay and have observed 2x10(4) events. The best fit to the decay spectrum gives a branching ratio for direct photon emission of (4.7+/-0.8+/-0. 3)x10(-6) in the pi(+) kinetic energy region of 55 to 90 MeV and requires no component due to interference with inner bremsstrahlung.
Adler
S
Brookhaven National Laboratory (BNL), Upton, New York 11973, USA.
Aoki
M
Ardebili
M
Atiya
MS
Bergbusch
PC
Blackmore
EW
Bryman
DA
Chiang
IH
Convery
MR
Diwan
MV
Frank
JS
Haggerty
JS
Inagaki
T
Ito
MM
Kabe
S
Kettell
SH
Kishi
Y
Kitching
P
Kobayashi
M
Komatsubara
TK
Konaka
A
Kuno
Y
Kuriki
M
Kycia
TF
Li
KK
Littenberg
LS