Lepton Flavor Non-Universality in B-meson Decays from a U ( 2 ) Flavor Model

@inproceedings{Falkowski2017LeptonFN,
  title={Lepton Flavor Non-Universality in B-meson Decays from a U ( 2 ) Flavor Model},
  author={Adam Falkowski and Marco Nardecchia and Robert Ziegler},
  year={2017}
}
We address the recent anomalies in semi-leptonic B-meson decays using a model of fermion masses based on the U(2) flavor symmetry. The new contributions to b→ s`` transitions arise due to a tree-level exchange of a Z ′ vector boson gauging a U(1) subgroup of the flavor symmetry. They are controlled by a single parameter and are approximately aligned to the Standard Model prediction, with constructive interference in the e-channel and destructive interference in the μ-channel. The current… CONTINUE READING