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Tau-lepton Physics at the FCC-ee circular e$^+$e$^-$ Collider

by Mogens Dam

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Submission summary

Authors (as registered SciPost users): Mogens Dam
Submission information
Preprint Link:  (pdf)
Date accepted: 2019-01-10
Date submitted: 2018-12-18 01:00
Submitted by: Dam, Mogens
Submitted to: SciPost Physics Proceedings
Proceedings issue: The 15th International Workshop on Tau Lepton Physics (TAU2018)
Ontological classification
Academic field: Physics
  • High-Energy Physics - Experiment
Approach: Experimental


The future FCC-ee collider is designed to deliver $\mathrm{e^+e^-}$ collisions to study with ultimate precision the Z, W, and Higgs bosons, and the top quark. In a high-statistics scan around the Z pole, $1.3\times 10^{11}$ events $\mathrm{Z}\to\tau\tau$ will be produced, the largest sample of $\tau\tau$ events foreseen at any lepton collider. With their large boost, $\tau$ leptons from Z decays are particularly well suited for precision measurements. The focus of this report is on tests of lepton universality from precision measurement of $\boldsymbol{\tau}$ properties and on tests of charged lepton flavour violation in Z decays and in $\tau$ decays. In both of these areas, FCC-ee promises sensitivities well beyond present experimental limits.

Published as SciPost Phys. Proc. 1, 041 (2019)

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