RT @PhysRevLett@twitter.com
R_K, a double ratio of branching fractions of B mesons to muons and electrons, previously showed a 2.6σ deviation from the predicted value of 1. With inclusion of new data from @LHCbExperiment@twitter.com, the anomaly persists at the 2.5σ level.
https://go.aps.org/2vXGtXA