Tau Physics: Theoretical Perspective

Abstract

The leptonic decays of the tau lepton provide relevant tests on the structure of the weak currents and the universality of their couplings to the gauge bosons. The hadronic tau decay modes constitute an ideal tool for studying low--energy effects of the strong interaction in very clean conditions. Accurate determinations of the QCD coupling and the strange quark mass have been obtained with tau decay data. New physics phenomena, such as a non-zero tau neutrino mass or violations of conservation laws can also be searched for with tau decays.

12 pages, 10 figures. Invited talk at the Sixth International Workshop on Tau Lepton Physics (Victoria, Canada, 18-21 September 2000)

Cited by in corpus (14)

• Present and Future Bounds on Non-Standard Neutrino Interactions
• Old and new physics interpretations of the NuTeV anomaly
• The Standard Model Prediction for epsilon'/epsilon
• Phenomenological implications of neutrinos in extra dimensions
• Decay constants, light quark masses and quark mass bounds from light quark pseudoscalar sum rules
• One meson radiative tau decays
• QCD Condensates for the Light Quark V-A Correlator
• Resonance Chiral Lagrangian analysis of ${\tau }^{-}\to {\eta }^{(\prime )}{\pi }^{-}{\pi }^0{\nu }_{\tau }$ decays
• On the longitudinal contributions to hadronic tau decay
• m_u+m_d From Isovector Pseudoscalar Sum Rules
• Spectral moments of two-point correlators in perturbation theory and beyond
• Lepton flavor violation decays ${\tau }^{-}\to {\mu }^{-}{P}_1{P}_2$ in the topcolor-assisted technicolor model and the littlest Higgs model with $T$ parity
• Lepton flavor violating semileptonic $\tau$ decays $\tau \to lP(V)$ in a topcolor scenario
• Spectrality, coupling constant analyticity and the renormalization group