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AbstractAbstract
[en] The results of a search for anomalous couplings of the tau lepton using data collected with the L3 detector at LEP are presented
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1993 joint meeting of the American Physical Society and the American Association of Physics Teachers; Washington, DC (United States); 12-15 Apr 1993; CONF-9304297--
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[en] Typical families of leptons with their characteristics are presented in a table. Special mention is made of the discovery of the Tau(tausup(-),tausup(+)) lepton and the consequent charges in the lepton theories. (A.K.)
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Sci. Rep. (India); v. 16(5); p. 332-333
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Giorgi, Marcello A.
SLAC National Accelerator Laboratory (United States). Funding organisation: US Department of Energy (United States)2011
SLAC National Accelerator Laboratory (United States). Funding organisation: US Department of Energy (United States)2011
AbstractAbstract
[en] We report the results of search for the neutrinoless lepton-flavor violating decay of the tau lepton into three charged leptons, performed using 376 fb-1 of data collected at an e+e- center-of-mass energy around 10.58 GeV with the BaBar detector at the PEP-II. In all six decay modes considered, the number of events found in data are compatible with the background expectations. Upper limits on the branching fractions are set in the range (4-8) x 10-8 at 90% confidence level.
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30 Nov 2011; 7 p; TAU08: 10. International Workshop on Tau Lepton Physics; Novosibirk (Russian Federation); 22-25 Sep 2008; AC02-76SF00515; Available from Nuclear Physics B - Proceedings Supplements; Volume 189, pages 166-172 (Apr 2009)
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[en] From 24-27 September 120 physicists met at the French Orsay Laboratory for a meeting devoted to the tau lepton and its associated neutrino
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INIS-XC--15A0594; Also available on-line: http://cds.cern.ch/record/1731841/files/vol30-issue9-p022-e.pdf; Country of input: International Atomic Energy Agency (IAEA)
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Migliozzi, P; Terranova, F, E-mail: francesco.terranova@cern.ch2011
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[en] The study of νμ→ντ oscillations and the explicit observation of ντ through the identification of the final-state τ lepton ('direct appearance search') represent the most straightforward test of the oscillation phenomenon. It is, nonetheless, the most challenging from the experimental point of view. In this paper, we discuss current empirical evidence for the direct appearance of tau neutrinos at the atmospheric scale and the perspectives for the next few years, up to the completion of the CNGS physics programme. We investigate the relevance of this specific oscillation channel for gaining insights into neutrino physics within the standard three-family framework. Finally, we discuss the opportunities offered by precision studies of νμ→ντ transitions for the occurrence of more exotic scenarios, emerging from additional sterile neutrinos or non-standard interactions.
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Available from http://dx.doi.org/10.1088/1367-2630/13/8/083016; Country of input: International Atomic Energy Agency (IAEA)
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New Journal of Physics; ISSN 1367-2630;
; v. 13(8); [24 p.]

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[en] In this paper the author discusses the issue of universality with respect to the tau particle. Present work is trying to attack this by looking at τντW and Zτ bar τ couplings. Some models predict that non-universality will be such a small effect that it may be only tractable with a device such as a tau-charm factory. The issue of universality has impacts in other electroweak reactions, and in many models. The observation of such effects may require very high luminosity however
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Beers, L.V.; Perl, M.L. (eds.); Stanford Linear Accelerator Center, Menlo Park, CA (United States); 763 p; Oct 1994; p. 720-743; Tau-Charm factory in the era of B-factories and CESR conference; Stanford, CA (United States); 15-16 Aug 1994; Also available from OSTI as DE95007894; NTIS; US Govt. Printing Office Dep
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Schenk, S.
Stanford Linear Accelerator Center (United States). Funding organisation: US Department of Energy (United States)2008
Stanford Linear Accelerator Center (United States). Funding organisation: US Department of Energy (United States)2008
AbstractAbstract
[en] This work presents simultaneous branching fraction measurements of the decay modes τ- → K- nπ0ντ with n = 0,1,2,3 and τ- → π- nπ0ντ with n = 3,4. The analysis is based on a data sample of 427 x 106 τ+τ- pairs recorded with the BABAR detector, which corresponds to an integrated luminosity of 464.4 fb-1. The measured values are Β(τ- → K-ντ) = (6.57 ± 0.03 ± 0.11) x 10-3, Β(τ- → K-π0ντ) = (4.61 ± 0.03 ± 0.11) x 10-3, Β(τ- → K- π0π0ντ) = (5.05 ± 0.17 ± 0.44) x 10-4, Β(τ- → K-π0π0π0ντ) = (1.31 ± 0.43 ± 0.40) x 10-4, Β(τ0 → π0π0π0π0ντ) = (1.263 ± 0.008 ± 0.078) x 10-2 and Β(τ0 → π0π0π0π0π0ντ) = (9.6 ± 0.5 ± 1.2) x 10-4, where the uncertainties are statistical and systematic, respectively. All measurements are compatible with the current world averages whereas the uncertainties are significantly smaller by a factor of up to five. The determination of Β(τ0 → π-π0π0π0π0ντ) is the first measurement of this branching fraction. The measured branching fractions are combined with the current world averages. Using the new averages, an updated determination of |Vus| from hadronic τ decays yields |Vus| = 0.2146 ± 0.0025, which improves previous measurements by 19%. Its uncertainty is comparable to the one of the current world average from semileptonic kaon decays
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16 Dec 2008; 194 p; AC02-76SF00515; Available from http://www.slac.stanford.edu/cgi-wrap/getdoc/slac-r-909.pdf; PURL: https://www.osti.gov/servlets/purl/944559-O5R3hX/; Thesis submitted to the Ruperto-Carola Univ. of Heidelberg (DE) for the degree of doctor rerum naturalium; doi 10.2172/944559
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AbstractAbstract
No abstract available
Original Title
Messung der Spektralfunktion seltsamer τ-Zerfaelle mit dem OPAL-Detektor
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2001 spring meeting of Fachverbaende Gravitation und Relativitaetstheorie (GR), Teilchenphysik (T), and Theoretische und Mathematische Grundlagen der Physik (MP) of Deutsche Physikalische Gesellschaft e.V. (DPG) with physics and book exhibition; Fruehjahrstagung 2001 der Fachverbaende Gravitation und Relativitaetstheorie (GR), Teilchenphysik (T), und Theoretische und Mathematische Grundlagen der Physik (MP) der Deutschen Physikalischen Gesellschaft e.V. (DPG) mit Physik- und Buchausstellung; Bonn (Germany); 26-30 Mar 2001
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Verhandlungen der Deutschen Physikalischen Gesellschaft; ISSN 0420-0195;
; CODEN VDPEAZ; v. 36(3); p. 40

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[en] R-parity stands as an ad hoc assumption in the most popular version of the supersymmetric standard model. More than fifteen years' studies of R-parity violations have been restricted to various limiting scenarios. We illustrate how the single-VEV parametrization provides a workable framework to analyze the phenomenology of the complete theory of supersymmetry without R-parity. In our comprehensive study of various aspects of the resulting leptonic phenomenology at tree-level, we find that the physical τ lepton could actually bear substantial gaugino and higgsino components, making it very different from the e and the μ
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TAU98: 5. international workshop on tau lepton physics; Santander (Spain); 14-17 Sep 1998; S0920563299004594; Copyright (c) 1999 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: Sri Lanka
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[en] I propose an explanation of the current discrepancy between the measured world average value and the theoretical value of the τ lepton lifetime. I argue that there exist common systematic errors in many of the experiments that use three-prong τ decays for the lifetime measurement. These systematic effects always shift the measurement towards longer lifetimes, and are caused by the small opening angle of three-prong τ decays and limited tracking chamber ability to resolve nearby hits. The theoretical τ lifetime agrees well with the measured world average value from the one-prong τ decays
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