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ECAL and RICH sub-detector enhancements approved for construction
The LHCb experiment will upgrade the inner part of the Electromagnetic Calorimeter and the electronics of the Ring Imaging Cherenkov detectors in the next LHC Long Shutdown (LS3). On July 5, 2022, protons collided again at LHCb after a 3.5 year break known as Long Shutdown 2 (LS2) marking the start of the LHC Run…
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LHCb observes the rare decay J/ψ→μ+μ–μ+μ–
Today, at the Rencontres de Moriond QCD and High Energy Interactions, the LHCb collaboration reported the observation of the rare elecromagnetic decay J/ψ→μ+μ–μ+μ–. The simultaneous discovery of the J/ψ meson at Brookhaven and SLAC in November 1974 brought about a revolutionary change in the particle physics landscape. Prior to this revolution, in analogy to atomic…
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Measurement of D0 − antiD0 mixing and CP violation in D0→K+π – decays
Today, at a CERN seminar, the LHCb collaboration reported results of the measurement of D0 − D0 mixing and CP violation in D0→K+π– decays with the full Run 2 data sample. When combined with the previous results from Run 1, the measurement provides 40% improvement to the total uncertainty compared to the previously published analysis.…