New test of lepton universality
Measurement of R(D*): the ratio of branching fractions between B0 → D*-τ+ντ and B0 → D*-μ+νμ using three-prong hadronic τ decays. Yesterday, at the 15th Flavor Physics and CP violation…
Start of 2017 data taking period
Today proton-proton collisions for physics restarted again after a 5 month “Extended Year End Technical Stop”. This traditional winter shut-down period was “extended” due to major installation work carried out…
Lepton universality test probes physics beyond the Standard Model
LHCb finds new hints of possible deviations from the Standard Model. Today, at a seminar at CERN, the LHCb collaboration presented results on the measurement of RK*0, which is the…
Measurement of antiproton production in p-He collisions
Can cosmic-ray antiprotons unveil dark matter collisions? This week, at the 52nd Rencontres de Moriond EW in La Thuile Italy, LHCb presented results of an analysis which may have significant…
The magic of the Ωc baryon
Observation of five new narrow Ωc0 excited states. As NASA announced a few days ago the discovery of the first system of seven Earth-size planets orbiting around a single star,…
New results presented at the Rencontres de la Vallée d’Aoste
The LHCb collaboration presented several new results at the 31st Rencontres de Physique de la Vallée d’Aoste taking place this week in La Thuile, Italy. A few selected items are…
First single experiment observation of the decay Bs0→ μ+μ-
From discovery to precision measurement. Today, in a seminar at CERN, the LHCb collaboration presented the first observation by a single experiment of the decay Bs0→μ+μ–, with a statistical significance…
Measurement of matter-antimatter differences in beauty baryon decays
Towards an important milestone in particle physics. The LHCb collaboration has published today in Nature Physics the first evidence for the violation of the CP symmetry in baryon decays with…