Category: Physics
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Elusive romance of top-quark pairs observed at the LHC
The CMS and ATLAS experiments at CERN’s Large Hadron Collider have observed an unforeseen feature in the behaviour of top quarks that suggests that these heaviest of all elementary particles form a fleeting union
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LHCb weighs up the Z
New measurement of the mass of the Z boson showcases the Large Hadron Collider’s growing role in precision physics
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ALICE eyes the cosmos
New data from the ALICE experiment, collected when no particle beams were circulating in the LHC during pauses in Run 2, may contribute to solving a puzzle surrounding cosmic muons
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AI enhances Higgs boson’s charm
The CMS collaboration presents a new search for the decay of a Higgs boson into charm quarks, bringing physicists closer to unravelling how this unique particle endows matter with mass
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ALICE detects the conversion of lead into gold at the LHC
Near-miss collisions between high-energy lead nuclei at the LHC generate intense electromagnetic fields that can knock out protons and transform lead into fleeting quantities of gold nuclei
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Hans Gutbrod (1942 – 2025)
Hans Gutbrod(1942 – 2025) — Hans Gutbrod, a pioneer of heavy-ion physics from its beginnings in the 1970s, passed away on 3 March 2025. He was one of the founding members of the ALICE collaboration at CERN and leader of the FAIR core team at GSI, Darmstadt. Hans studied at the Technical University of Karlsruhe
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ATLAS gets under the hood of the Higgs mechanism
The detection of longitudinally polarised W boson production at the Large Hadron Collider is an important step towards understanding how the primordial electroweak symmetry broke, giving rise to the masses of elementary particles
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CMS finds unexpected excess of top quarks
Data from the CMS experiment at CERN’s Large Hadron Collider reveals an intriguing excess of top-quark pairs, hinting at the first observation of a composite particle with unique properties
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Symmetry between up and down quarks is more broken than expected
Surprising results from the NA61/SHINE collaboration at CERN show that this so-called isospin asymmetry could point to gaps in physicists’ understanding of how quarks and gluons combine
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A new piece in the matter–antimatter puzzle
The LHCb experiment at CERN has revealed a fundamental asymmetry in the behaviour of particles called baryons