Tag: News
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KstarMuMu3
The LHCb Collaboration has just published the results of a new analysis of the B0→K*0μ+μ– decay, with K*0→K+π–. These results were presented three weeks ago at the European Physical Society Conference on High Energy Physics, EPSHEP, Stockholm, Sweden, and triggered very interesting discussions. The analysis of the B0→K*μμ decay is considered as a very promising
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BsMuMu5
The CMS and the LHCb Collaborations have announced today at the 2013 European Physical Society Conference on High Energy Physics, EPSHEP, Stockholm, Sweden, that the B0s→μμ decay is observed. The LHCb Collaboration presented already at this conference the measurement of the B0s→μμ branching fraction of (2.9+1.1-1.0)x10-9 with a significance of 4.0σ (see the 19 July
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PhPol
The LHCb Collaboration has just presented at the 2013 European Physical Society Conference on High Energy Physics, EPSHEP, Stockholm, Sweden, a first significant non-zero measurement of an observable proportional to the photon polarisation in b→sγ transition. The transition of a b-quark to an s-quark by emission of a photon (γ) is considered a very important
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BsMuMu4
The LHCb Collaboration has just presented at the 2013 European Physical Society Conference on High Energy Physics, EPSHEP, Stockholm, Sweden, improved measurements for the rare decays B0s→μμ and B0→μμ. Last year at the Hadron Collider Particle Symposium in Kyoto, the Collaboration presented the first evidence, with 3.5σ significance, for the B0s→μμ decay using the total
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UnexRes
The LHCb Collaboration has just presented at the 2013 European Physical Society Conference on High Energy Physics, EPSHEP, Stockholm, Sweden, a first observation of unexpected resonant structure in B+→K+μ+μ– decays. Precise study of this decay could uncover a possible contribution from new physics. This contribution could, however, hide behind the dominant B+→K+μ+μ– decay modes which
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Lambdab
[ τ(Λb)/ τ(B0) = 0.976±0.012±0.006 ] [ τ((Λb) = 1.482±0.018±0.012 ps ] The LHCb Collaboration has just published an important precise measurement of the Λb beauty baryon lifetime. The Λb is a particle composed of the up (u), down (d) and beauty (b) quarks, so it can be understood as being like a neutron (composed
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penguins
How “penguins” can help LHCb to chase for new physics? – read explanations in the June issue of CERN Courier and then follow links to the LHCb physics results announced in the 13 March 2012 and 25 May 2012 news at this page. The name of penguin appeared in particle physics in 1977 following a
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Famelab
Donal Hill, LHCb PhD student, was nominated as the best Swiss FameLabber 2013 during the Swiss FameLab final in Zurich. Nine candidates selected in a previous heat in Geneva were evaluated by a judging panel and by the audience. Donal will represent Switzerland at the Cheltenham Science Festival in the UK in June 2013. FameLab
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EPSprize
The High Energy Physics Division of the European Physical Society announced today the winners of its 2013 prizes, which will be awarded at the Europhysics Conference on High-Energy Physics (EPS-HEP 2013), Stockholm (Sweden) 18-24 July 2013. The 2013 Young Experimental Physicist Prize, for outstanding work by one or more young physicists in the field of
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pA
The LHCb Collaboration has just presented at the Workshop on proton-nucleus collisions at the LHC, Trento, Italy, the first results from the analysis of proton with lead ion collision run data taken in January-February 2013. Already these first results made an important contribution to the understanding of heavy ion collisions. In the Standard Model of