Tau physics at future facilities

Abstract

This paper discusses and projects the tau research which may be carried out at CESR, at BEPC, at the SLC, in the next few years at LEP I, at the asymmetric B-factories under construction in Japan and the United States and, if built, a tau-charm factory. AS the size of tau data sets increases, there is an increasing need to reduce the effects of systematic errors on the precision and search range of experiments. In most areas of tau physics there is a large amount of progress to be made, but in a few areas it will be difficult to substantially improve the precision of present measurements. CONTENTS 1. Introduction 2. Future Facilities 3. Detectors, Efficiencies and Systematic 4. Precisely Calculable Decay Modes 5. Dynamics of Lepton Decays 6. Semileptonic Decay Modes 7. Rare Decays, Forbidden Decays and Lepton Conservation in Tau Production 8. CP Violation in Tau Production and Decay 9. Tau Neutrino Mass Errors 10. Electromagnetic Properties of the Tau DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recornmendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.