An upper limit for the τ-neutrino mass from τ → 5π±vτ decays

OPAL Collaboration

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

An upper limit for the τ-neutrino mass has been determined from the decay τ → 5π±vτ using data collected with the OPAL detector from 1991 to 1995 in e+e- collisions at √s ≈ Mz. A limit of 43.2 MeV at 95% CL is obtained using a two-dimensional method in the 5π invariant mass and energy distribution from 22 selected events. Combining this result with OPAL's previously published measurement using τ+ τ- → 3h±τ + 3h∓vτ decays, a new combined limit of m < 27.6 MeV (95% CL) is obtained.

Original languageEnglish
Pages (from-to)229-237
Number of pages9
JournalEuropean Physical Journal C
Volume5
Issue number2
DOIs
StatePublished - 1 Jan 1998
Externally publishedYes

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Physics and Astronomy (miscellaneous)

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