The Circular Electron–Positron Collider (CEPC), a 100-km electron–positron “Higgs factory” proposed in China, has reached the technical-design stage but will not be included for approval or construction in the country’s 15th Five-Year Plan (2026–2030).
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With the story of quarkonia entering its final chapter, John Ellis shares personal recollections of five decades of discoveries and debates about the simplest composite object in QCD, whose history is inextricable from the development of particle physics.
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Michael Riordan surveys the extraordinary events of 1964 – a year that witnessed the birth of the quark model, the invention of the Higgs mechanism, the discovery of CP violation and the first observation of the cosmic microwave background.
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As the LHC surpasses one exabyte of stored data–the largest scientific data set ever accumulated-Cristinel Diaconu and Ulrich Schwickerath call for new collaborations to join a global effort in data preservation, so future generations can unearth the hidden treasures.
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How are inputs and debates shaping Europe's strategy for particle physics? A community-driven process is building consensus, says CERN Council president Costas Fountas, while Strategy secretary Karl Jakobs reports from a vibrant Open Symposium in Venice.
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The new CERN Courier looks ahead, to the future of particle physics - and back to the outstanding year of 1964. The story of quarkonia spans all six decades, and its final chapter is now being written. Plus: data preservation, X17, dark energy and more.
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A century after its inception, quantum mechanics remains empirically flawless yet conceptually unresolved. Carlo Rovelli outlines four leading interpretations: physical collapse, hidden variables, many worlds, and relational quantum mechanics.
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Many-worlds quantum mechanics is often dismissed as extravagant. David Wallace argues that it is the natural consequence of taking Schrödinger’s wavefunction as fundamental.
Read more: cerncourier.com/a/the-minima...
Quantum sensors have become essential in low-energy physics. CERN's Michael Doser explores how their precision could be extended to high-energy experiments.
Read more: cerncourier.com/a/sensing-at...
Extreme environments and complex quantum dynamics
pose serious challenges for classical computation. Quantum simulators may offer a promising path forward.
Read the article here: cerncourier.com/a/quantum-si...
One hundred years ago today, Werner Heisenberg wrote to Wolfgang Pauli of radical ideas about quantum mechanics. As this special anniversary edition of #CERNCourier shows, a century has not sufficed to fully understand or apply the theory.
Read it now: cerncourier.com/p/magazine/
Automated space telescopes are inspiring a new generation of particle accelerators that are primarily operated by AI
Verena Kain highlights four ways machine learning is already making the LHC more efficient
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Should a Higgs factory be a linear or circular electron–positron collider?
Intriguingly, the key strategic technology may be the same in either case…
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Lu Lu looks forward to the next two decades of neutrino astrophysics, exploring the remarkable detector concepts needed to probe ultra-high energies from 1 EeV to 1 ZeV
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The May/June CERN Courier explores two developments in accelerator physics: energy-efficient powering and AI automation
Plus:
Neutrino astrophysicists at the exascale
Beate Heinemann on DESY’s future
DESI suggests dark energy may be evolving
Community inputs to the ESPP
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New quadrupole magnets for the High-Luminosity LHC will use Nb3Sn conductors for the first time in an accelerator
Progress is speeding up at #CERN
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Symmetry between up and down quarks is more broken than expected
Surprising results from the NA61/SHINE collaboration #AtCERN show that this so-called isospin asymmetry could point to gaps in physicists’ understanding of how quarks and gluons combine.
Find out more: home.cern/news/news/ph...
@km3net.bsky.social strings of photodetectors anchored to the seabed off the coast of Sicily have detected the most energetic neutrino ever observed, smashing previous records
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While searching for additional Higgs bosons, the @cmsexperiment.bsky.social may have instead uncovered evidence for the smallest composite particle yet observed in nature – a “quasi-bound” hadron commonly called toponium.
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Welcome to the March/April issue of the CERN Courier 💫
Ugo Amaldi remembers his father Edoardo, anomalies big and small, KM3NeT smashes records for neutrino energy, triggers and magnets for the High-Luminosity #LHC, how to get a job in gaming... and much more.
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The latest edition of CERN Courier explores two of the most fascinating anomalies in fundamental science: the Hubble tension and muon g-2. Both are the subject of fast moving developments, and both could hint at new particles and interactions.
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The CLOUD collaboration at CERN has revealed a new source of atmospheric aerosol particles that could help scientists refine climate models
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The @ALICEexperiment has seen the first ever evidence for antihyperhelium-4 — if confirmed, this will be the heaviest antimatter hypernucleus yet seen at the LHC
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“The authors are more positive than I am about the prospects for dark-matter detection in the near future, claiming that we will soon know which dark-matter candidates exist ‘in the real pantheon of nature’”
Read Anne Green’s review here:
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A new @CMSExperiment analysis explores an often overlooked, difficult corner of SUSY manifestations: compressed sparticle mass spectra
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Trial trap on a truck: CERN'S BASE-STEP experiment has taken the first step in testing the world's most compact antimatter trap
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CERN Courier’s #Astrowatch correspondent, Merlin Kole, highlights the diverse instruments aboard China’s permanently crewed space station, Tiangong
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A word with CERN’s next Director-General
Mark Thomson sat down with the Courier to talk about the future of particle physics
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Claire Malone argues that science communicators should not stray too far into public-relations territory
Read her viewpoint here:
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“Hackathons are crucial platforms for developing skills, growing networks and kick-starting careers – especially for early-career researchers,” says Jiannan Zhang, CEO and founder of DoraHacks
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