The Rencontres de Moriond provides a snapshot of the questions particle physicists are pondering, in a way capturing the flavour and direction of efforts to unravel what the smallest bits of our universe look like. An architectural installation at Fermilab, the high-energy particle physics research centre, in Illinois. For two weeks from March 10, particle physicists from around the world will gather for an annual conference in Italy to present and discuss theories and recent experimental results. Called the Rencontres de Moriond, the conference provides a snapshot of the questions keeping particle physicists occupied, in a way capturing the flavour and direction of efforts of those scientists studying what the smallest bits of our universe look like.
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Rencontres de Moriond EW Seeing less would be just as good - CERN Bulletin
They confirm the Standard Model predictions with an unprecedented precision and put limits on possible deviations due to new physics. LHCb is a precision experiment that looks for new physics by studying in particular some rare decays: yet undiscovered particles could leave their footprint by modifying the decay rate and other physics parameters. Deviations from values predicted by the Standard Model — the established set of physics theories that describes and encompasses a large variety of natural phenomena — could point scientists to the existence of new territories. An example is the decay of the so-called B 0 s meson — a particle made of a bottom anti-quark bound to a strange quark — into two muons.
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Seeing less than the value predicted by the Standard Model for rare B decays branching ratios would still open the door to new physics. This is the reassuring message David Straub delivered to a relieved audience yesterday morning at the Moriond conference. After the LHCb announcement of the most precise measurement to date of the rare decay of B s to two muons Monday at the Moriond conference, a slight wind of pessimism swept through the audience: everybody had been hoping to see the first signs of new physics revealed by a small excess in the branching ratio predicted by the Standard Model.
Tuesday saw presentations on heavy flavour physics and heavy-ion physics. Among the highlights were an updated scenario for supersymmetry and the latest results on the properties of the quark-gluon plasma. The green area shows the mass region where supersymmetry in these graphs, only one specific model is shown is still allowed.