Springer LINK: The European Physical Journal C - Abstract Volume 2 Issue 3 (1998) pp 395-406

The European Physical Journal C

ISSN: 1434-6044 (printed version)
ISSN: 1434-6052 (electronic version)

Table of Contents

Abstract Volume 2 Issue 3 (1998) pp 395-406
DOI 10.1007/s100529800850

experimental physics:
An upper limit on the $\tau$ neutrino mass from three- and five-prong tau decays

ALEPH Collaboration , R. Barate et al.

Laboratoire de Physique des Particules (LAPP), IN2P3-CNRS, F-74019 Annecy-le-Vieux Cedex, France

Received: 30 October 1997 / Published online: 10 March 1998

Abstract. A bound on the tau neutrino mass is established using the data collected from 1991 to 1995 at $\sqrt{s} \simeq m_{Z}$ with the ALEPH detector. Two separate limits are derived by fitting the distribution of visible energy vs invariant mass in $\tau^{-} \rightarrow 2\pi^{-} \pi^{+} \nu_{\tau}$ and $\tau^{-} \rightarrow 3\pi^{-} 2\pi^{+} (\pi^{0}) \nu_{\tau}$ decays. The two results are combined to obtain a 95% confidence level upper limit of 18.2 MeV/c$^2$ on the mass of the tau neutrino.

Article in PDF-Format
Article in (gzipped) PS-Format

The European Physical Journal C

experimental physics: An upper limit on the $\tau$ neutrino mass from three- and five-prong tau decays

experimental physics:
An upper limit on the $\tau$ neutrino mass from three- and five-prong tau decays