Model independent constraints on four-lepton operators

We obtain constraints on 4-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.