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…
First Physics at 13 TeV
LHC Run 2 started today. LHCb physicists have been eagerly awaiting this moment since 14 February 2013 when the last Run 1 collisions took place. The LHC has reached 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…
First 13 TeV collisions
Today, proton beams collided at 13 TeV for the first time inside the LHCb detector. The collisions were part of the ongoing accelerator tests, and are not useful for physics…
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…
First 2015 proton-proton collisions
Today, for the first time in over two years, protons have collided inside the LHCb detector. Each proton beam had an energy of 450 GeV, which is the value they…
LHC proton beams are circulating again
Today, for the first time in two years, both proton beams are circulating again in the LHC. The picture shows the LHC operators steering the two beams. The proton beam…
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…