Category: Physics
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CMS strengthens the case for toponium
A new independent measurement by the CMS experiment at the LHC is consistent with the existence of the most massive composite particle ever observed, the momentary union of a top quark and its antiquark
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ALICE sees new sign of primordial plasma in proton collisions
The ALICE Collaboration takes a step further in addressing the question of whether a quark–gluon plasma can be formed in proton–proton and proton–nucleus collisions
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ATLAS sets strong limits on supersymmetry
Using machine-learning techniques, the ATLAS Collaboration has searched deep for signs of particles that could help answer some of the greatest mysteries of physics
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LHCb Collaboration discovers new proton-like particle
Composed of two charm quarks and one down quark, the doubly charmed particle is four times heavier than a proton
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The March/April 2026 issue of the CERN Courier is out
A hadron collider’s energy reach is defined by the circumference of its tunnel and the strength of its dipole magnets. Next-generation hadron colliders look set to have tunnels more than three times longer than the LHC. Further expansion of the energy frontier depends on the ability of accelerator physicists to increase the strength of the
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NA62 Collaboration refines measurement of rare particle decay
Study of the one-in-ten-billion kaon decay allows researchers to stress-test the Standard Model of particle physics
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Machine learning to reveal more about LHC particle collisions
The CMS Collaboration demonstrates that machine learning can outperform traditional methods in the full reconstruction of particle collisions at the LHC
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Antonino Zichichi (1929 – 2026)
A pioneer of CERN’s experimental programme in the 1950s, he was one of the most influential figures in high-energy physics
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What can you do with 380 million Higgs bosons?
The latest edition of the CERN Courier magazine explores what the High-Luminosity LHC will be able to say about the distant past and future of the Universe
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The January/February 2026 issue of the CERN Courier is out
Physicists can be allies, wrote Wassily Kandinsky, “who test matter again and again, who tremble before no problem, and who finally cast doubt on that very matter which was yesterday the foundation of everything, so that the whole universe is shaken.” This edition of CERN Courier offers two examples of physics to shake the universe.