@article{dc756ab460ec49eaa383f8606ec68258,
title = "Measurement of the τ topological branching ratios at LEP",
abstract = "The inclusive branching ratios of the τ lepton to one, three and five charged particle final states are measured from data collected with the OPAL detector at LEP. The data sample consists of 12707e+e- → τ+τ- candidate events and has an estimated background of 1.9%. The branching ratios are obtained from a simultaneous fit to the data which gives B1 = 84.48 ± 0.27 (stat) ±0.23 (sys)%, B3 = 15.26±0.26±0.22% and B5 = 0.26±0.06±0.05% respectively where B1 + B3 + B5 is constrained to equal one. The inclusive one-prong branching ratio is found to be significantly lower than the 1990 Particle Data Group world average while the branching ratio to three charged particles is correspondingly higher. The five-prong branching ratio is in agreement with the world average measurement.",
author = "{OPAL Collaboration} and Acton, {P. D.} and G. Alexander and J. Allison and Allport, {P. P.} and Anderson, {K. J.} and S. Arcelli and A. Astbury and D. Axen and G. Azuelos and Bahan, {G. A.} and Baines, {J. T.M.} and Ball, {A. H.} and J. Banks and Barker, {G. J.} and Barlow, {R. J.} and S. Barnett and Batley, {J. R.} and G. Beaudoin and A. Beck and J. Becker and T. Behnke and Bell, {K. W.} and G. Bella and P. Berlich and S. Bethke and O. Biebel and U. Binder and Bloodworth, {I. J.} and P. Bock and B. Boden and Bosch, {H. M.} and S. Bougerolle and H. Breuker and Brown, {R. M.} and R. Brun and A. Buijs and Burckhart, {H. J.} and P. Capiluppi and Carnegie, {R. K.} and Carter, {A. A.} and Carter, {J. R.} and Chang, {C. Y.} and Charlton, {D. G.} and Clarke, {P. E.L.} and I. Cohen and Collins, {W. J.} and Conboy, {J. E.} and M. Cooper and M. Couch and S. Komamiya",
note = "Funding Information: It is a pleasure to thank the SL Division for the efficient operation of the LEP accelerator, and for its continuing close cooperation with our experimental group. In addition to the support staff at our own institutions we are pleased to acknowledge the Department of Energy, USA, National Science Foundation, USA, Science and Engineering Research Council, UK, Natural Sciences and Engineering Research Council, Canada, Israeli Ministry of Science, Minerva Gesellschaft, Japanese Ministry of Education, Science and Culture (the Monbusho) and a grant under the Monbusho International Science Research Program, American Israeli Bi-national Science Foundation, Direction des Sciences de la Mati6re du Commissariat h l'Energie Atomique, France, Bundesministerium fiir Forschung und Technologie, FRG, National Research Council of Canada, Canada, A.P. Sloan Foundation and Junta Nacional de Investigag~o Cient~fica e Tecnol6gica, Portugal. Publisher Copyright: {\textcopyright} 1992.",
year = "1992",
month = aug,
day = "27",
doi = "10.1016/0370-2693(92)91117-R",
language = "English",
volume = "288",
pages = "373--385",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier",
number = "3-4",
}