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CERN announces winners of its 2015 beamline for schools competition

Geneva, 15 June 2015. CERN1 today announced the winners of its 2015 beamline for schools competition. Two teams of high-school students have been selected to travel to CERN in September to carry out their own experiments using a CERN accelerator beam. The winners, the “Leo4G” team from Liceo Scientifico Leonardo da Vinci School in Florence, Italy and the “Accelerating Africa” team from St John's College and Barnato Park High School in Johannesburg, South Africa, were selected from 119 teams from around the world, adding up to about 1050 high-school students.

LHC experiments are back in business at a new record energy

Geneva, 3 June 2015. Today, CERN1's Large Hadron Collider (LHC) started delivering physics data for the first time in 27 months. After an almost two year shutdown and several months re-commissioning, the LHC is now providing collisions to all of its experiments at the unprecedented energy of 13 TeV, almost double the collision energy of its first run. This marks the start of season 2 at the LHC, opening the way to new discoveries. The LHC will now run round the clock for the next three years.

CMS and LHCb experiments reveal new rare particle decay

Geneva, 13 May 2015. In an article published today in Nature, the CMS and LHCb collaborations describe the first observation of the very rare decay of the B0s particle into two muon particles. The Standard Model, the theory that best describes the world of particles, predicts that this rare subatomic process happens about four times out of a billion decays, but it has never been seen before. These decays are studied as they could open a window to theories beyond the Standard Model, such as supersymmetry. The analysis is based on data taken at the Large Hadron Collider (LHC) in 2011 and 2012. These data also contain early hints of a similar, but even more rare decay into two muons of the B0, a cousin of the B0s.


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