Search for lepton flavor violation in K+ decays into a charged pion and two leptons.
A search for lepton flavor violating decays, K+ --> mu+ mu+ pi-, K+ --> e+ e+ pi-, K+ --> pi+ e+ mu-, K+ --> mu+ e+ pi-, and pi0 --> e+ mu-, was performed using the data collected in Experiment E865 at the Brookhaven Alternating Gradient Synchrotron. No signal was found in any of the decay modes. At the 90% confidence level, the branching ratios are less than 3.0x10(-9), 6.4x10(-10), 5. 2x10(-10), 5.0x10(-10), and 3.4x10(-9), respectively.
Appel
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R
Physics Department, Yale University, New Haven, Connecticut 06511, USA.
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
Fischer
H
H
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
Menzel
W
W
Pislak
S
S
Poblaguev
A A
AA
Rehak
P
P
Sher
A
A
Thompson
J A
JA
Truöl
P
P
Zeller
M E
ME