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arXiv · 1310.2057

Precision tests of unitarity in leptonic mixing

Lorenzo Basso·Oliver Fischer·Jochum J. van der Bij
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Abstract

In the light of the recent LHC data, we study precision tests sensitive to the violation of lepton universality, in particular the violation of unitarity in neutrino mixing. Keeping all data we find no satisfatory fit, even allowing for violations of unitarity in neutrino mixing. Leaving out sin$^2 θ_{\scriptsize \mbox{eff}}$ from the hadronic forward-backward asymmetry at LEP, we find a good fit to the data with some evidence of lepton universality violation at the $\mathcal{O}(10^{-3})$ level.

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Lorenzo Basso, Oliver Fischer, Jochum J. van der Bij. 2014-05-06. Precision tests of unitarity in leptonic mixing. https://doi.org/10.1209/0295-5075%2F105%2F11001

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