Measurement of the threshold behavior of. pi. /sup +/. pi. /sup -/ production in e/sup +/e/sup -/ annihilation

W. Bacino,T. Ferguson,L. Nodulman,W. Slater,H. K. Ticho,A. Diamant-Berger,M. Faessler,A. Hall,G. M. Irwin,J. Kirkby,F. S. Merritt,S. G. Wojcicki,R. R. Burns,Paul E. Condon,P. Cowell,Janos Kirz

Measurement of the threshold behavior of. pi. /sup +/. pi. /sup -/ production in e/sup +/e/sup -/ annihilation

1978

W. Bacino
T. Ferguson
L. Nodulman
W. Slater
H. K. Ticho
A. Diamant-Berger
M. Faessler
A. Hall
G. M. Irwin
J. Kirkby
F. S. Merritt
S. G. Wojcicki
R. R. Burns
Paul E. Condon
P. Cowell
Janos Kirz

We have observed 692 events of the type e/sup +/e/sup -/ ..-->.. e/sup + -/X/sup - +/ (X not = e) in the center-of-mass energy range 3.1 GeV or = 3 charged particles 0.32 +- 0.05.

Keywords:

Pair production
Atomic physics
Pi
Annihilation
Electron–positron annihilation
Physics
Nuclear physics
Particle decay
Branching fraction
Elementary particle
Fermion
Charged particle
Particle physics

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