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arXiv · 1511.07434

Model independent constraints on four-lepton operators

Adam Falkowski·Kin Mimouni
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Abstract

We obtain constraints on four-lepton interactions in the effective field theory with dimension-6 operators. To this end, we combine the experimental input from Z boson measurements in LEP-1, W boson mass and decays, muon and tau decays, lepton pair production in LEP-2, neutrino scattering on electrons, and parity violating electron scattering. The analysis does not rely on any assumptions about the flavor structure of the dimension-6 operators. Our main results are the confidence intervals for Wilson coefficients of 16 lepton-flavor conserving four-lepton operators, together with the full correlation matrix. Consequences for leptophilic models beyond the Standard Model are discussed.

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Adam Falkowski, Kin Mimouni. 2015-12-07. Model independent constraints on four-lepton operators. https://doi.org/10.1007/jhep02(2016)086

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