Lepton flavor universality violation without new sources of quark flavor violation

Abstract

We show that new physics models without new flavor violating interactions can explain the recent anomalies in the b→sℓ[superscript +]ℓ[superscript -] transitions. The b→sℓ[superscript +]ℓ[superscript -] arises from a Z[superscript ′] penguin which automatically predicts the V-A structure for the quark currents in the effective operators. This framework can either be realized in a renormalizable U(1)[superscript ′] setup or be due to new strongly interacting dynamics. The dimuon resonance searches at the LHC are becoming sensitive to this scenario since the Z[superscript ′] is relatively light, and could well be discovered in future searches by ATLAS and CMS.