Prospects for new physics in τ→lμμ at current and future colliders

Hays, Chris; Mitra, Manimala; Spannowsky, Michael; Waite, Philip

doi:10.1007/jhep05(2017)014

Prospects for new physics in τ→lμμ at current and future colliders

Hays, Chris; Mitra, Manimala; Spannowsky, Michael; Waite, Philip

Authors

Chris Hays

Manimala Mitra

Professor Michael Spannowsky michael.spannowsky@durham.ac.uk
Director

Philip Waite

Abstract

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.

Citation

Hays, C., Mitra, M., Spannowsky, M., & Waite, P. (2017). Prospects for new physics in τ→lμμ at current and future colliders. Journal of High Energy Physics, 2017(5), Article 014. https://doi.org/10.1007/jhep05%282017%29014

Journal Article Type	Article
Acceptance Date	Apr 27, 2017
Online Publication Date	May 3, 2017
Publication Date	May 3, 2017
Deposit Date	Jan 5, 2017
Publicly Available Date	May 9, 2017
Journal	Journal of High Energy Physics
Print ISSN	1126-6708
Publisher	Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Peer Reviewed	Peer Reviewed
Volume	2017
Issue	5
Article Number	014
DOI	https://doi.org/10.1007/jhep05%282017%29014
Related Public URLs	https://arxiv.org/abs/1701.00870

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