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 tetraquark candidate, Tcccc, composed of two charm quarks and two…
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 as the X(3872). These results have also been presented at…
Observation of new Ξc0 baryons
Today, the LHCb collaboration submitted a paper reporting a system of three particles interpreted as three narrow excited Ξc0 – states. The Ξc0 baryon is composed of a charm-, a…
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 uses the same technique as a previous measurement performed on…
Observation of a new beauty baryon particle
Today at the Winter Meeting on Nuclear Physics, Bormio, Italy, the LHCb collaboration announced the discovery of a new beauty baryon particle. The new particle is observed in the Λb0π+π–…
Beautiful charming and magic Ω baryons
First observation of excited Ωb– states. Today, the LHCb collaboration submitted a paper reporting a new system of four particles interpreted as four narrow excited Ωb– states. As in many…
Test of lepton universality with beauty baryons, RpK
Today the LHCb Collaboration submitted for publication a measurement of the ratio RpK. This tests a principle of the Standard Model of particle physics known as “lepton universality“, which states…
Celebrating LHCb’s 500th publication
The LHCb collaboration has submitted its 500th publication! The first LHCb paper was submitted in August 2010, and since then 50 to 70 papers were submitted per year. All LHCb…
Production of exotic meson candidate χc1(3872) in high-multiplicity events and other interesting results presented at the Quark Matter conference
The LHCb Collaboration presented several new interesting results at the Quark Matter 2019 conference in Wuhan, China. Among them was a study of how the production rate of the exotic…
More and more precise measurements
The LHCb Collaboration presented interesting new results at the International Conference on Kaon Physics 2019 in Perugia, Italy, and at the International Conference on B-physics at frontier machines, Beauty 2019…