A major theme of the electroweak session was flavour physics, and the star of the show was LHCb’s observation of CP violation in charm decays.
The LHCb data also confirm that the structure previously reported by the collaboration in 2015 has now been resolved into two narrow, overlapping peaks.
The MEG II experiment is preparing to probe the muon’s flavour-violating decay to a positron and a photon with unprecedented sensitivity.
The LHCb collaboration has released a much anticipated update on its measurement of RK – a powerful test of lepton universality.
Met with an impromptu champagne celebration, the result represents a milestone in particle physics.
BaBar has now chalked up more than 580 papers on CP violation and many other topics.
Given LHCb’s current level of experimental precision, any sign of CP violation would be a clear indication of physics beyond the Standard Model.
LHCb has been flooded by b- and c-hadrons due to the large beauty and charm production cross-sections within the experiment’s acceptance.
At first glance, measuring fully leptonic decays seems a step too far, since there is only one charged particle as a signature and no reconstructed B-decay vertex.
Recent results from LHCb and other experiments appear to challenge the assumption of lepton-flavour universality.