Towards a determination of the tau lepton dipole moments

Abstract

The tau anomalous magnetic moment (a_tau) and electric dipole moment (d_tau) have not yet been observed. The present bounds on their values are of order 10^-2 and 10^-17 e*cm, respectively. We propose to measure a_tau with a precision of O(10^-3) or better and improve the existing limits on d_tau using precise tau- -> l- nu_tau \bar{nu}_l gamma (l=e or mu) data from high-luminosity B factories. A detailed feasibility study of this method is underway.

4 pages, presented at the 12th International Workshop on Tau Lepton Physics, Nagoya, Japan, 17-21 September 2012

References in corpus (6)

• Tenth-Order QED Contribution to the Electron g-2 and an Improved Value of the Fine Structure Constant
• Flavour physics of leptons and dipole moments
• Testing new physics with the electron g-2
• Precise mass-dependent QED contributions to leptonic g-2 at order alpha^2 and alpha^3
• Tau anomalous magnetic moment form factor at Super B/Flavor factories
• Tau spin correlations and the anomalous magnetic moment

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• $\tau$ dipole moments via radiative leptonic $\tau$ decays
• Radiative $\mu$ and $\tau$ leptonic decays at NLO
• Search for the anomalous electromagnetic moments of the tau lepton through electron-photon scattering at the CLIC
• $H\to {\tau }^{+}{\tau }^{-}\gamma$ as a Probe of the $\tau$ Magnetic Dipole Moment
• Analysis of the anomalous electromagnetic moments of the tau lepton in $\gamma p$ collisions at the LHC
• Anomalous magnetic and weak magnetic dipole moments of the $\tau$ lepton in the simplest little Higgs model
• "Could Charm (\& $\tau$) Transitions be the `Poor Princesses' of Deeper Understanding of Fundamental Dynamics?" -- or -- "Finding Novel Forces?"
• Leading-order hadronic contributions to the electron and tau anomalous magnetic moments
• Interference Resurrection of the $\tau$ Dipole through Quantum Tomography
• Gravitational Effects on Measurements of the Muon Dipole Moments
• Strategy to measure tau $g-2$ via photon fusion in LHC proton collisions
• Leading-order hadronic contributions to the lepton anomalous magnetic moments from the lattice
• Measurement of radiative tau decays tau -> l gamma nu anti-nu at BaBar