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…
Observation of orbitally excited Bc+ states
At a CERN seminar today, the LHCb collaboration announced the first observation of orbitally excited Bc+ states, which are composed of a beauty-charm quark-antiquark pair. Within the expected mass range…
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…
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…
LHCb’ s 700th publication reports interesting studies of Quantum Chromodynamics
The LHCb collaboration submitted its 700th publication! The paper reports the integrated and differential cross-section measurements of associated J/ψ and ψ(2S) production in proton-proton collisions at 13TeV, the measurement is…
The first evidence for CP violation in a specific charm hadron decay
The International Conference on High Energy Physics, ICHEP 2022, ended today in Bologna (Italy). At this conference, the LHCb collaboration reported a new measurement of the CP-violating asymmetry, ACP, in…
High precision measurement of the charm oscillation parameter yCP – yCPKπ using decays of D0 mesons to two light mesons
yCP – yCPKπ = (6.96±0.26±0.13)x10-3 Today, the LHCb Collaboration submitted for publication a paper that reports the results of the high precision measurement of the charm oscillation (mixing) parameter yCP…
Discovery of CP violation in charm particle decays
An important milestone in the history of particle physics. The LHCb collaboration has just presented at the Rencontres de Moriond EW and in a special CERN Seminar the first observation…
Observation of a new charmonium state
… and study of near-threshold D0D0 spectroscopy. This week the LHCb Collaboration announced the discovery of a new particle made of a charm and anti-charm quark. The results, which were…