The Pope of Physics: Enrico Fermi and the Birth of the Atomic Age By Gino Segrè and Bettina Hoerlin Henry Holton and Co. Enrico Fermi can be considered as one of the greatest physicists of […]

“I think the Courier is excellent; it’s sort of ‘frozen in time’, but in a rather appropriate and appealing way.” Of all the lively comments received from the 1400 or so readers who took part […]

Measurements of b-hadron decays with neutrinos in the final state are one of the best ways to understand how quarks decay, and in particular how they couple to leptons. With recent results from LHCb, BaBar […]

Two new experiments at CERN, ALPHA-g and GBAR, have begun campaigns to check whether antimatter falls under gravity at the same rate as matter. The gravitational behaviour of antimatter has never been directly probed, though […]

Honouring Hans Bethe Physicists and friends from all over the USA assembled at Cornell University on 24 October to honour Hans Bethe on his retirement. Bethe has made important contributions to the fields of atomic, solid […]

Recent results from the LHCb and other experiments appear to challenge the assumption of lepton-flavour universality. To explore further, the CMS collaboration has recently conducted a new search probing one of the theories that attempts […]

Hirosi Ooguri is the new director of Kavli IPMU • Petroff nominated director of Brazilian light source • APS announces 2019 prize and award winners • ATLAS recognises outstanding members • CERN commemorates history of Berlin building • First telescope on Cherenkov array site • Theory event fuses physics and gender • Muon g-2 fans gather in Novosibirsk • Tau physics focus in Amsterdam • Exploring quantum computing for high-energy physicste • Halfway to high luminosity

Many of the stars appearing in the night sky did not originate from within our galaxy, concludes a new study of data from the European Space Agency’s Gaia observatory. Instead, Gaia has found evidence that […]

The first measurement of Λc+-baryon production in lead–lead (Pb–Pb) collisions at an energy of 5.02 TeV per colliding nucleon pair was presented by the ALICE collaboration at the International Conference on Hard and Electromagnetic Probes of […]

High-luminosity collisions of electrons and positrons at the KEKB accelerator in Japan have established the existence of a new baryon with strangeness S = –2, shedding light on the structure of doubly-strange hyperon resonances. In a preprint […]

Leon Lederman 1922–2018 • Paul Kunz 1942–2018 • Karlheinz Meier 1955–2018 • Ferenc Niedermayer 1945–2018

This single image captures three objects with very different lifetimes. The bright yellow line is the result of a meteor that disintegrated in Earth’s atmosphere and was visible for less than a second (CERN Courier […]

The exploration of W- and Z-boson interactions at the energy frontier probes the heart of the Brout–Englert–Higgs mechanism. The cross-section of longitudinal weak-boson scattering would diverge, resulting in meaningless values, were it not for the […]

An international team has made an advance towards more compact particle accelerators, demonstrating that beams can be focused via a technique called active plasma lensing without reducing the beam quality. Building smaller particle accelerators has […]

The Large Hadron Collider’s 2018 proton physics run came to an end on 24 October, having accumulated an impressive dataset. The integrated luminosity delivered to both the ATLAS and CMS experiments reached an average of around […]

Two independent groups are going to Earth’s extremes to make unprecedented measurements for physics, education and the environment.

Les machines à l’arrêt jusqu’en 2021  Un baryon doublement étrange observé au Japon Des lentilles plasma laissent entrevoir des accélérateurs plus petits Observer comment l’antimatière tombe   CMS se penche sur les anomalies de saveurs LHCb pose des contraintes pour une désintégration muonique très rare du B ATLAS observe la diffusion de bosons vecteurs Le baryon Λ+c pour sonder l’hadronisation du quark c Gaïa observe des signes d’une ancienne fusion de la Voie lactée