“Grand Unification” of data taking
End of data taking for 2017. The 2017 data taking period ended this Sunday. Towards the end of the 2017 run at the centre-of-mass energy of 13 TeV, the LHC…
Implications of LHCb measurements
This week LHCb physicists met with the theory community in the 7th yearly workshop “Implications of LHCb measurements and future prospects”. The purpose of the meeting is to consider the…
First xenon-xenon collisions at the LHC
Yesterday evening the first xenon-xenon ion collisions took place at LHC and the run lasted for seven hours. The left image below shows the corresponding LHC control screen announcing the…
New avenue to precision mass measurements of the χc1 and χc2 mesons
[m(χc1) = 3510.71±0.04±0.09 MeV; m(χc2) = 3556.10±0.06±0.11 MeV] [m(χc2) – m(χc1) = 45.39±0.07±0.03 MeV] [Γ(χc2) = 2.10±0.20±0.02 MeV] Today, at the open session of the Large Hadron Collider Committee, LHCC,…
First test of lepton universality using charmed-beauty meson decays
Measurement of R(J/ψ): the ratio of branching fractions between Bc+→J/ψτ+ντ and Bc+→J/ψμ+νμ using τ+→ μ+νμ ντ decays. [R(J/ψ) = 0.71±0.17±0.18] Today, at the open session of the Large Hadron Collider…
6 fb-1 : celebrating “Jeûne genevois”
The LHCb collaboration has reached a symbolic milestone this morning, announcing that the experiment has recorded a luminosity of 6 fb-1 integrated over the whole period of data taking 2010-2017.…
Several new results presented at the EPS-HEP conference.
The LHCb collaboration presented new results in 32 talks given by LHCb speakers at the EPS Conference on High Energy Physics, EPS-HEP 2017, Venice, Italy. The observation of an exceptionally…
Observation of an exceptionally charming particle
[ m(Ξcc++) = 3621.40±0.72±0.27±0.14 MeV/c2 ] Today, at the EPS Conference on High Energy Physics, EPS-HEP 2017, in Venice, Italy, the LHCb collaboration presented the first observation of a doubly…
Hélène Langevin-Joliot visited the LHCb detector cavern
Hélène Langevin-Joliot visited today the LHCb detector cavern during a short LHC Technical Stop (left image). She is the Emeritus Research Director in Fundamental Nuclear Physics at CNRS in Orsay…
Giovanni Passaleva and Chris Parkes – new management for the LHCb Collaboration
Giovanni Passaleva from the Istituto Nazionale di Fisica Nucleare in Firenze begins today his 3-year tenure as LHCb spokesperson. He takes over from Guy Wilkinson from the University of Oxford.…