Tag: News
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XiccRed
[ m(Ξcc++) = 3621.55±0.23±0.30 MeV/c2 ] A year ago the LHCb collaboration announced the observation of an exceptionally charmed particle, the Ξcc++ baryon. This particle contains two charm quarks and one up quark, resulting in an overall doubly positive charge. A month ago the collaboration has presented the first measurement of the lifetime of this
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Omegac
[ τ(Ωc0) = 268±24±10±2 fs ] Today the LHCb collaboration submitted for publication the result of a measurement of the lifetime of the Ωc0 baryon, i.e. a composite particle composed of css quarks. The Ωc0 baryon was identified via Ωb–→Ωc0μ–νμX decays, and then by means of the Ωc0→pK–K–π+ decay. The decay-time distribution of the Ωc0
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HeRSCheL
First physics results with the HeRSCheL detector. In a typical proton-proton collision at the LHC, proton constituents, quarks or gluons, interact and move to opposite directions. They are interconnected by a strong interaction coloured field, a so-called “string”. (Note an analogy to the electromagnetic field interconnecting electric charges.) The strength of this interaction increases with
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LifeXicc
[ τ(Ξcc++) = 0.256+0.024-0.022±0.014 ps ] Last year the LHCb Collaboration announced the observation of an exceptionally charmed particle, the Ξcc++ baryon. This contains two charm quarks and one up quark, resulting in an overall doubly positive charge. The Ξcc++ baryon was identified via its decay into a Λc+ baryon and three lighter mesons K–,
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QM2018
The activities of the LHCb collaboration have expanded far beyond the original core aims. The excellent performance of the detector has allowed the experiment to make important contributions to a wide range of research sectors becoming in this way a general purpose detector in the forward region. The results presented this week at the Quark
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2018SB
The 2018 data taking period started officially today. The last 2017 proton-proton collisions took place on 28 November and the LHC machine was shut down during the winter period to allow for planned technical interventions. LHCb used this period to perform maintenance work on many sub-detectors. Four months later proton beams passed again through the
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Egg
Update 2 April 2018: see explanation here. Today, at the Rencontres de Cuisine, the LHCb collaboration announced the observation of a new particle consistent with the properties of the long-hunted Eggs ball, ηgg, the smallest lump of nuclear force, predicted more than 40 years ago by Peter Eggs. Today is thus an eggstra special day
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Moriond2018
The LHCb Collaboration presented new interesting results at the Rencontres de Moriond EW and at the Rencontres de Moriond QCD. A few selected items are listed below. (1) Search for a dimuon resonance in the Υ mass region. The only known fundamental scalar particle is the Higgs boson with a mass of 125 GeV. However,
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End2017
End of data taking for 2017. The 2017 data taking period ended this Sunday. Towards the end of the 2017 run at the centre-of-mass energy of 13 TeV, the LHC provided collisions at a reduced energy of 5 TeV to produce reference data for proton-lead and lead-lead collisions taken earlier in Run 2. Besides the
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Implication2017
This week LHCb physicists met with the theory community in the 7th yearly workshop “Implications of LHCb measurements and future prospects”. The purpose of the meeting is to consider the latest results from LHCb, discuss possible interpretations and identify important channels and observables to test leading theoretical frameworks in the near and long-term future of