Model independent analysis of the decay B→K+ℓ++ℓ−

We demonstrate that the Dalitz-distributions in energies of both unpolarized leptons, produced in the decays B→K+ℓ++ℓ−, for ℓ=e, μ, τ, can be a sensitive test for possible new physics beyond the Standard Model. We find measurable characteristics (including the polarization of leptons as well) which are independent of all dirty non-perturbative physics needed in calculating the hadronic form factors. Such characteristics can be used to estimate the presence of possible non-standard mechanisms in a model-independent manner.