The model-discriminating power of lepton flavor violating tau decays

Abstract

Within an effective field theory framework, we discuss the possibility to discriminate among different operators that contribute to lepton flavor violating (LFV) tau decays. Correlations among decay rates in different channels are shown to provide a basic handle to unravel the origin of LFV in these processes. More information about the underlying dynamics responsible for LFV can be gathered from differential distributions in three-body decays like tau -> mu pi pi or tau -> 3 mu: these are considered in some detail. We incorporate in our analysis recent developments in the determination of the hadronic form factors for tau -> mu pi pi. Future prospects for the observation of LFV tau decays and its interpretation are also discussed.

25 pages, 8 figures, 5 tables

References in corpus (8)

• Flavour physics of leptons and dipole moments
• Lepton flavour violating semileptonic tau decays in constrained MSSM-seesaw scenarios
• Precise limits from lepton flavour violating processes on the Littlest Higgs model with T-parity
• Improving the Hadron Physics of Non-Standard-Model Decays: Example Bounds on R-parity Violation
• The lepton-flavour violating decay τ\to μμ\antimu at the LHC
• Search for Lepton-Flavor-Violating tau Decays into a Lepton and an f0(980) Meson
• Search for $\tau \to \mu +\gamma$ decay at Super $c-\tau$ factory
• Analysis of Lepton Flavor Violating τ^\pm \to μ^\pm μ^\pm μ^\mp Decays

Cited by in corpus (5)

• Improved predictions for $\mu \to e$ conversion in nuclei and Higgs-induced lepton flavor violation
• Effective Theory and Simple Completions for Neutrino Interactions
• "Could Charm (\& $\tau$) Transitions be the `Poor Princesses' of Deeper Understanding of Fundamental Dynamics?" -- or -- "Finding Novel Forces?"
• Disentangling new physics contributions in lepton flavour violating tau decays
• Challenges for New Physics in the Flavour Sector