Observation of the doubly charmed heavy proton Ξcc+.
Today at the Rencontres de Moriond Electroweak meeting, the upgraded LHCb experiment at CERN announced its first particle discovery: a new kind of heavy proton-like particle known as the Ξcc⁺.…
Precision measurements of CKM angle γ, charm mixing and CP violation
Today, at the CERN seminar, the LHCb collaboration reported an improved determination of the CKM angle γ with a precision of 2.6°. This result was obtained by a simultaneous combination…
Special light-ion LHC runs
The LHC carried out a special run programme early summer. First results were reported by the ALICE, ATLAS, CMS and LHCb experiments at the Initial Stages of High-Energy Nuclear Collisions…
Searching for new physics with the flavour changing neutral current decay B0→K*μ+μ–
Last week at the LHCC open session and this week at a CERN seminar, the LHCb collaboration presented the legacy results from Run-1 and Run-2 data of the angular distributions…
The first dedicated Z-boson mass measurement at the LHC
Today, the LHCb collaboration submitted for publication a paper reporting the first dedicated Z-boson mass measurement at the LHC using Z→μ+μ− decays. The data were recorded in 2016 and correspond…
Observation of the different behaviour of baryonic matter and antimatter.
First observation of CP violation in baryon decays – an important milestone in the history of particle physics. Yesterday, at the Rencontres de Moriond EW, the LHCb collaboration reported the…
Measurement of the effective leptonic weak mixing angle
Today, at the 42nd International Conference on High Energy Physics, ICHEP, Prague, Czech Republic, the LHCb collaboration reported a measurement of the effective leptonic weak mixing angle, sin2θleff, the parameter…
Improved determination of the CKM angle γ
Today, at the 42nd International Conference on High Energy Physics, ICHEP, Prague, Czech Republic, the LHCb collaboration reported an improved determination of the CKM angle γ with a precision better…
Observation of the rare Σ+→pμ+μ– decay
The LHCb collaboration reported the observation of the Σ+→pμ+μ– rare decay at the XV International Conference on Beauty, Charm, Hyperons in Hadronic Interactions (BEACH 2024) in Charleston, South Carolina, USA.…
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…