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CERN Courier magazine: November 2017 digital edition

Cern Courier

Welcome to the digital edition of the November 2017 issue of CERN Courier

Rarely has such a short paper sparked such a massive experimental campaign as Steven Weinberg’s 50 year-old “Model of Leptons”. CERN, along with SLAC in the US and others, has been at the centre of the action in verifying the model’s predictions: it took Gargamelle to unearth neutral currents, the Super Proton Synchrotron to produce the W and Z bosons, the Large Electron–Positron collider to measure their properties in detail, and the Large Hadron Collider to flush out the Higgs boson. Unifying the electromagnetic and weak interactions, Weinberg’s iconic 2.5 page-long and relatively straightforward manuscript brought a much needed moment of clarity to the field. But today, with all its bosons bagged, Weinberg says that the electroweak Standard Model has become a victim of its own success, with no obvious way to break through to a more fundamental picture. This month we also celebrate 60 years of the Particle Data Group, whose Review of Particle Physics has been at the side of physicists throughout the Standard Model’s remarkable evolution.

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