3–7 Apr 2017
University of Birmingham
Europe/London timezone

Prospects for new physics in tau decays to l-mu-mu at current and future colliders

4 Apr 2017, 15:12
15m
Nuffield Building G17

Nuffield Building G17

WG3) Higgs and BSM Physics in Hadron Collisions WG3 Higgs and BSM Physics in Hadron Collisions

Speaker

Chris Hays (University of Oxford (GB))

Description

The discovery of lepton flavour violating interactions will be striking evidence for physics beyond the Standard Model. Focusing on the three decays τ∓→μ±μ∓μ∓, τ∓→e±μ∓μ∓ and τ∓→e∓μ∓μ±, we evaluate the discovery potential of current and future high-energy colliders to probe lepton flavour violation in the τ sector. Based on this potential we determine the expected constraints on parameters of new physics in the context of the Type-II Seesaw Model, the Left-Right Symmetric Model, and the Minimal Supersymmetric Standard Model. The existing and ongoing 13 TeV run of the Large Hadron Collider has the potential to produce constraints that outperform the existing e+e− collider limits for the τ∓→μ±μ∓μ∓ decay and achieve a branching fraction limit of ≲10−8. With a future circular e+e− collider, constraints on the τ→lμμ branching fractions could reach as low as a few times 10−12.

Primary authors

Chris Hays (University of Oxford (GB)) Manimala Mitra Michael Spannowsky Philip Waite (IPPP Durham University)

Presentation materials