Journal article
Determination of an upper limit for the mass of the τ-neutrino at LEP
Abstract
An upper limit for theντ mass is determined through the kinematic reconstruction of the decayτ→5π±ντ in the OPAL detector at LEP. The limit is obtained using a new method based on the comparison of the two-dimensional distribution of energy and invariant mass of the five-pion system with expectations from different neutrino mass hypotheses. From a sample of five events surviving the selection criteria we obtain an upper limit of 74 MeV at 95% …
Authors
OPAL Collaboration; Akers R; Alexander G; Allison J; Anderson KJ; Arcelli S; Asai S; Astbury A; Axen D; Azuelos G
Journal
Zeitschrift für Physik C Particles and Fields, Vol. 65, No. 2, pp. 183–188
Publisher
Springer Nature
Publication Date
6 1995
DOI
10.1007/bf01571874
ISSN
0170-9739