Search for massive neutrinos in $π^{+}$ → $μ^{+}$ ν decay

Publisher Website

1 January 1996

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

Vol. 53 (1) , 558-559
https://doi.org/10.1103/physrevd.53.558

Abstract

Evidence of massive neutrinos was sought in the

π^{+}

→

μ^{+}

x decay spectrum in the mass region

M_{x}

=30–33.91 MeV/

c^{2}

. Upper limits on the branching ratio

R_{μ x}

≤(4–6)×

10^{- 5}

(90% C.L.) were set for this region, which correspond to the neutrino mixing parameter ‖

U_{μ x}

‖^{2}

<

10^{- 3}

–

10^{- 4}

. © 1995 The American Physical Society.

Keywords

This publication has 12 references indexed in Scilit:

Possible pre-LEP200 SUSY threshold signals
Physics Letters B, 1995
Remarks on the KARMEN anomaly
Physics Letters B, 1995
An upper limit for the τ neutrino mass from τ → 5π(π0)ντ decays
Physics Letters B, 1995
Anomaly in the time distribution of neutrinos from a pulsed beam stop source
Physics Letters B, 1995
Upper bounds on lepton-number violating meson decays
Physical Review Letters, 1992
First results at the LEP e+e− collider
Physics Reports, 1991
Search for admixtures of massive neutrinos in the decay $π^{+}$ → $μ^{+}$ +ν
Physical Review D, 1987
Search for an admixture of heavy neutrino states in pion decay
Physics Letters B, 1981
General theory of weak processes involving neutrinos. I. Leptonic pseudoscalar-meson decays, with associated tests for, and bounds on, neutrino masses and lepton mixing
Physical Review D, 1981
General theory of weak processes involving neutrinos. II. Pure leptonic decays
Physical Review D, 1981