The lepton-flavour violating decay τ\to μμ\antimu at the LHC

Abstract

Lepton-flavour violating tau-decays are predicted in many extensions of the Standard Model at a rate observable at future collider experiments. In this article we focus on the decay tau to mu mu antimu, which is a promising channel to observe lepton-flavour violation at the Large Hadron Collider LHC. We present analytic expressions for the differential decay width derived from a model-independent effective Lagrangian with general four-fermion operators, and estimate the experimental acceptance for detecting the decay tau to mu mu antimu at the LHC. Specific emphasis is given to decay angular distributions and how they can be used to discriminate new physics models. We provide specific predictions for various extensions of the Standard Model, including supersymmetric, little Higgs and technicolour models.

19 pages, 9 figures, this version: some clarifications, typos corrected, references added

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Cited by in corpus (14)

• Lepton Flavour Violating Decays tau to lll and mu to e gamma in the Higgs Triplet Model
• The model-discriminating power of lepton flavor violating tau decays
• Low- and high-energy phenomenology of a doubly charged scalar
• Phenomenology in the Higgs Triplet Model with the A_4 Symmetry
• Tau and muon lepton flavor violations in the littlest Higgs model with T-parity
• Completeness and Complementarity for $\mu \to e\gamma$, $\mu \to 3e$ and $\mu \to e$ conversion
• Lepton Flavour Violation and Flavour Symmetries
• Effect of FCNC mediated Z boson on lepton flavor violating decays
• Muon Anomalous Magnetic Moment and Lepton Flavor Violating Tau Decay in Unparticle Physics
• Charged lepton mixing processes in 331 Models
• New physics with the lepton flavor violating decay $\tau \to 3\mu$
• Lepton Flavor Violating tau --> 3mu Decay in Type-III Two Higgs Doublet Model
• Neutrino-Mass Hierarchies and Non-linear Representation of Lepton-Flavour Symmetry
• Measuring CP-violating phases through studying the polarization of the final particles in $\mu \to eee$