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

Hays, Chris and Mitra, Manimala and Spannowsky, Michael and Waite, Philip (2017) 'Prospects for new physics in τ→lμμ at current and future colliders.', Journal of high energy physics., 2017 (5). p. 14.

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.

Item Type:Article
Full text:(VoR) Version of Record
Available under License - Creative Commons Attribution.
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1007/JHEP05(2017)014
Publisher statement:This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
Date accepted:27 April 2017
Date deposited:09 May 2017
Date of first online publication:03 May 2017
Date first made open access:No date available

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