Category: Physics results

Test of lepton universality using B0→KS0l+l– and B+→K*+l+l– decays. Today at the CERN seminar and at the Rencontres de Blois the LHCb Collaboration presented new tests of lepton universality, one…

[ mW=80354±23stat±10expsys±17theory±9PDF MeV] Last week the LHCb Collaboration submitted for publication a paper that reports the first LHCb measurement of the W boson mass with an uncertainty of 32 MeV…

This week at the European Physical Society conference on high energy physics, EPS-HEP 2021 the LHCb Collaboration presented the first observation of a doubly charmed tetraquark, Tcc+, with a new…

Today at the European Physical Society conference on high energy physics, EPS-HEP 2021 the LHCb Collaboration presented results of a measurement consistent with the presence of valence-like charm content in…

The Bs→φμ+μ– branching fraction measured below the Standard Model prediction. This week at the Flavor Physics and CP Violation (FPCP) conference in Shanghai, China, the LHCb Collaboration presented a measurement…

m1-m2 = 6.4×10-6 eV = 0.00000000000000000000000000000000000001 grams (1×10-38g) (m1-m2)/(D0mass) = 3×10-15 Today, the LHCb Collaboration submitted a paper for publication that reports the first observation of the mass difference between…

Precise determination of the Bs0−Bs0 oscillation frequency. “A phenomenon in which quantum mechanics gives a most remarkable prediction” – Richard Feynman Today, the LHCb Collaboration submitted a paper for publication…

[ Branching fraction Bs0→μ+μ– = (3.09+0.46-0.43+0.15-0.11)x10-9 ; B0→μ+μ– < 2.6×10-10 ] Today, at the Rencontres de Moriond EW and at the CERN seminar, the LHCb collaboration presented an improved measurement…

Update of RK measurement Today at the Rencontres de Moriond EW conference and at a seminar at CERN, the LHCb Collaboration presented an updated measurement of the ratio RK, an…

Welcome to tetraquark discovery territory Today, the LHCb Collaboration submitted a paper for publication that reports the first observation of two tetraquarks with a new quark content ccus, decaying to…