First VELO closing
Today the two halves of new Vertex Locator (VELO) approached the LHC proton-proton collision point for the first time. This process is called “VELO closing” in the LHCb jargon. The…
New test of lepton universality using the first simultaneous measurement of R(D) and R(D*) observables at LHCb
Today at the CERN seminar the LHCb Collaboration presented new tests of lepton universality, one of the basic principles of the Standard Model (SM) of particle physics. This principle states…
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…
First collisions at the world-record energy for a brand-new LHCb detector
Start of LHC Run 3. Today, at 16:47, protons collided again at LHCb after a 3.5 year break known as Long Shutdown 2 (LS2). During this period the original LHCb…
Observation of a strange pentaquark, a doubly charged tetraquark and its neutral partner.
Today, at the CERN seminar, the LHCb Collaboration reported the observation of a strange pentaquark, a doubly charged tetraquark and its neutral partner. These results will also be presented at…
Measurement of the CKM angle γ
The largest CP violation ever observed. This week, at the 10th Annual Large Hadron Collider Physics Conference, LHCP2022, LHCb presented results of the determination of the Cabibbo–Kobayashi–Maskawa (CKM) angle γ…
LHCb measurements help to understand possible signatures of dark matter presence in the Universe
Today, at the Quark Matter conference at Kraków, Poland, the LHCb Collaboration presented results of an analysis which may have significant consequences for the search for “dark matter” in the…
Magic beauty charmless decays
The largest CP violation ever observed. Today, at the Rencontres de Moriond EW, and on Tuesday, during a CERN seminar, the LHCb Collaboration reported the results of measurements of CP…
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…
Installation of the VELO
One half of the Vertex Locator (VELO) has landed at the LHCb experiment hall. The VELO detector will be located very tightly around the collision point. As the name suggests,…