First observation of the mass difference between neutral charm mesons.
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…
Fascinating quantum mechanics
Precise determination of the Bs0−Bs0 oscillation frequency. “A phenomenon in which quantum mechanics gives a most remarkable prediction” – Richard…
Improved measurement of Bs0→ μ+μ- decays
[ 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…
Strengthened hints for a violation of lepton universality in B decays.
Update of RK measurement Today at the Rencontres de Moriond EW conference and at a seminar at CERN, the LHCb…
Observation of two ccus tetraquarks and two ccss tetraquarks
Welcome to tetraquark discovery territory Today, the LHCb Collaboration submitted a paper for publication that reports the first observation of…
LHC as a Large Hadron Discovery Factory
The LHC, Large Hadron Collider, is a particle collider in which accelerated protons collide inside four large experiments. Hadrons (Greek:…
Observation of a four-charm-quark tetraquark
A “smoking gun” for tightly bound tetraquarks? Today, the LHCb collaboration submitted a paper reporting the discovery of a possible…
More on χc1(3872) puzzle
Today, the LHCb collaboration submitted two papers reporting precise measurements of the properties of a mysterious particle χc1(3872), also known…
Observation of new Ξc0 baryons
Today, the LHCb collaboration submitted a paper reporting a system of three particles interpreted as three narrow excited Ξc0 –…
B0→K*μ+μ-: more data confirm old puzzle
Today at the CERN seminar, the LHCb collaboration presented an analysis of the angular distributions of B0→K*μ+μ– decays. The measurement…