Tag: News
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COVID19
CERN has established a task force to identify and support contributions from the Organization’s 18 000-strong global community to combat the COVID-19 pandemic. A team of physicists, engineers and technicians from the LHCb collaboration, supported by several LHCb institutions and CERN services, has developed a novel streamlined ventilator, called HEV. As the pandemic spreads, the
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Xic
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 strange- and a down-quark (csd). The lightest of all baryons, the proton, which is the nucleus of the hydrogen atom, is composed of two up-
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P5p2020
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 the 2011 and 2012 data sample, but twice as many B0 decays were analysed, due to the addition of data taken during 2016. Compared with
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Lambdab2S
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– spectrum using the full LHCb Run 1 and Run 2 data set, corresponding to an integrated luminosity of 9fb-1. The lightest baryon, the proton, which
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Omegab
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 particle physics analyses, the LHCb physicists had to sift through a large amount of data, piecing together particles detected by their experiment (in this case
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RpK
BROKEN IMAGE NOT MOVED (drupal url : https://astro.web.cern.ch//news/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 that the laws of physics treat the three charged leptons (electrons, muons and taus) identically, except for
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Awards19
The LHC Run 2 ended a year ago. The LHCb experiment has been largely dismantled and an almost completely new detector is under construction in these very days: a new LHCb will be born in 2021. Almost allCb’s sub-detectors will be replaced or upgraded during the ongoing LHC shutdown and the new upgraded detectors will
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500th
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 papers are accessible on the arXiv and are published Open Access. The 500th paper reports sophisticated, multidimensional analysis through which the quantum numbers of several
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QM2019
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 meson candidate χc1(3872) (historically known as the X(3872)) in pp collisions depends on the multiplicity – the number of particles in the event. In the
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Beauty2019
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 in Ljubljana, Slovenia. Selected topics are listed below. (1) Hunting for the rarest strange decays at the LHC, KS0→μμ. Decays of K mesons into pairs