https://doi.org/10.1140/epjc/s10052-017-4952-0
Regular Article - Theoretical Physics
Status of the 
anomaly after Moriond 2017
1
Department of Physics, University of Cincinnati, Cincinnati, OH, 45221, USA
2
Excellence Cluster Universe, Boltzmannstr. 2, 85748, Garching, Germany
* e-mail: david.straub@tum.de
Received:
12
April
2017
Accepted:
28
May
2017
Published online:
7
June
2017
Motivated by recent results by the ATLAS and CMS collaborations on the angular distribution of the 
decay, we perform a state-of-the-art analysis of rare B meson decays based on the 
transition. Using standard estimates of hadronic uncertainties, we confirm the presence of a sizeable discrepancy between data and SM predictions. We do not find evidence for a 
or helicity dependence of the discrepancy. The data can be consistently described by new physics in the form of a four-fermion contact interaction 
. Assuming that the new physics affects decays with muons but not with electrons, we make predictions for a variety of theoretically clean observables sensitive to violation of lepton flavour universality.
© The Author(s), 2017
