Experimental study of the radiative decays K+-->mu(+)nue(+)e(-) and K+-->e(+)nue(+)e(-).
Experiment 865 at the Brookhaven Alternating Gradient Synchrotron obtained 410 K+-->e(+)nue(+)e(-) and 2679 K+-->mu(+)nue(+)e(-) events including 10% and 19% background. The branching ratios were measured to be [2.48+/-0.14(stat)+/-0.14(syst)]x10(-8) (m(ee)>150 MeV) and (7.06+/-0.16+/-0.26)x10(-8) (m(ee)>145 MeV), respectively. Results for the decay form factors are presented.
Poblaguev
A A
AA
Institute for Nuclear Research of Russian Academy of Sciences, Moscow 117 312, Russia.
Appel
R
R
Atoyan
G S
GS
Bassalleck
B
B
Bergman
D R
DR
Cheung
N
N
Dhawan
S
S
Do
H
H
Egger
J
J
Eilerts
S
S
Herold
W
W
Issakov
V V
VV
Kaspar
H
H
Kraus
D E
DE
Lazarus
D M
DM
Lichard
P
P
Lowe
J
J
Lozano
J
J
Ma
H
H
Majid
W
W
Pislak
S
S
Rehak
P
P
Sher
A
A
Thompson
J A
JA
Truöl
P
P
Zeller
M E
ME