Improved search for massive neutrinos in $π^{+} \to e^{+} ν$ decay

Publisher Website

1 August 1992

journal article
research article
Published by American Physical Society (APS) in Physical Review D

Vol. 46 (3) , R885-R887
https://doi.org/10.1103/physrevd.46.r885

Abstract

Evidence of massive neutrinos was sought in the

π^{+} \to e^{+} ν

decay spectrum with the background from the

π \to μ \to e

decay chain highly suppressed. Upper limits (90% C.L.) were set on the neutrino mixing parameter

{| U_{ei} |}^{2} < 10^{- 7}

in the mass region

50 < m_{ν} < 130

MeV/

c^{2}

.

Keywords

SPECTRUM

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