A measurement of a fundamental parameter of the Standard Model
The LHCb collaboration has submitted a paper based on run 1 data which reports the measurement of a fundamental parameter of the Standard Model (SM), the electroweak mixing angle, θW.…
Is a b to a u quark transition modified by a new particle?
The LHCb collaboration published today in Nature Physics a paper based on run 1 data which reports the determination of the parameter |Vub| describing the transition of a b quark…
First LHC run2 physics results
Measurement of J/ψ production cross-sections in pp collisions at 13 TeV. At the EPS-HEP 2015 conference in Vienna the LHCb collaboration has presented today the first measurement of the probability…
Observation of particles composed of five quarks, pentaquark-charmonium states, seen in Λb0 → J/ψpK- decays
The LHCb collaboration submitted today a paper based on run 1 data which reports the observation of pentaquark-charmonium states decaying into a J/ψ meson and a proton p. In the…
An intriguing anomaly
Measurement of the decay B0 → D*+τ– ντ Today, at the 13th Flavor Physics and CP violation conference in Nagoya (Japan), the LHCb collaboration presented the preliminary result from a…
Observing nearly invisible
Observation of the rare Bs0→μμ decay from the combined analysis of CMS and LHCb data The CMS and LHCb Collaborations have published today in Nature the first observation of the…
B0→K*μ+μ-: new analysis confirms old puzzle
Angular analysis of the B0→K*μ+μ– decay. Today at the 50th Rencontres de Moriond Electroweak, in La Thuile (Italy), the LHCb collaboration presented the result of a first full angular analysis…
Matter-antimatter trigonometry with LHCb
Precise measurement of the unitarity triangle angle β. Today at Les Rencontres de Physique de la Vallée d’Aoste, La Thuile, Italy, the LHCb collaboration presented an important result in our…
First observation of two new baryonic strange beauty particles
The LHCb collaboration submitted today a paper reporting the discovery of two new particles. The particles, known as the Ξb‘- and Ξb*-, were predicted to exist by the quark model…
φs: CP violation in the Bs system — looking for a chink in the armour of the Standard Model
Final run 1 result: φs = – 0.010 ± 0.039 rad Today, at the workshop “Implications of LHCb measurements and future prospects” at CERN, LHCb physicists have presented their final…