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CERN is a European research organization near Geneva that operates the Large Hadron Collider and other particle accelerators for physics experiments.
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CMS physicists have measured, for the first time, the diffusion wakes jets leave behind in quark-gluon plasma, 20 years after they were first predicted. The result adds a second test of the fluid picture of the matter that filled the universe for its first microseconds.
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Self-supervised pretraining let a sparse transformer match scratch-trained neutrino-flavour tagging with about 1,000 labelled events against roughly 10,000. All of it ran on simulated events for FASERCAL, a proposed FASER upgrade at CERN, so it is a design result until the detector records real neutrinos.
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Colliding oxygen-16 and neon-20 produced quark-gluon plasma, and the outgoing particles carried the shape of the incoming nuclei. Light-ion runs now buy two results at once.
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Reading a cosmic-ray shower has always meant trusting a computer model of what happens in air. Last July the LHC made the collision those models start from, under conditions physicists chose.
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CERN crews have begun dismantling the LHC around ATLAS and CMS to swap its focusing magnets for niobium-tin ones about 40% stronger. The first replacement quadrupole is not due in the tunnel until the start of 2029.
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A search of LHC collision data for microscopic quantum black holes found none. The exclusion limit that follows is the publishable result. Where that limit sits decides whether theorists have to move.
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The LHC spent part of July 2025 colliding protons with oxygen nuclei to imitate a cosmic ray hitting air, and ATLAS's measurement is now finer than the disagreements among the seven codes used to model showers.
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Entanglement had been confirmed in photons, electrons and trapped ions, all relatively long-lived systems. An Oxford-led team has now found it in Z bosons made inside the LHC's most violent collisions.
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The trap lost no particles on the road run and has held antiprotons for more than a month, and the collaboration's stated reason for moving them is that running the facility itself shakes the magnetic field its instruments depend on.
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Tamas Vami and Danyi Zhang looked through CMS data for microscopic black holes, found none, and published the bound. They also describe the search itself as a new way to look for new particles.
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Antiprotons had never travelled by road before March. BASE's mobile trap held its cargo long enough to prove the concept, and the precision gain the group wants still depends on a laboratory in Dusseldorf that is not finished.
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The two bosons decay before any instrument can touch them, so the team read their spins from the angles of the leptons left behind in 13 trillion electron volt proton collisions. Physical Review Letters has the result.
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ALICE turned near-miss lead collisions into a photon beam and scanned momentum transfer down to a resolution of 0.2 femtometers, about a quarter of a proton. The drop in J/psi production it found there was not expected.
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Transition-edge sensors cooled near absolute zero measured the X-ray lines that sit inside the gamma-ray band used to identify nuclear material. Anyone who wants one also has to buy the refrigerator that keeps it cold.
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Physicists at NIST used superconducting films held near absolute zero to measure X-rays from uranium, plutonium and neptunium in the band where they overlap the gamma rays used for material accounting. Existing gamma detectors can use the new reference values.
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A Sophia University calculation of 5.36 TeV oxygen-oxygen collisions at the LHC counts how much of the matter actually equilibrates, and finds a nonequilibrated remainder near 30% that survives even the most central events.
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A Samsung and University of Warsaw preprint tracks the names large language models keep inventing, Elena Vasquez and Marcus Chen among them, into hundreds of AI-generated papers that scholarly aggregators index without checking whether the author exists.
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An efficiency ratio can double while the electricity bill keeps climbing. That gap is where the case for the next collider gets argued, and won.
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The elliptic signal says neon-20 is not spherical. The triangular signal runs the wrong way, and no number for the deformation survives that disagreement.
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A Michigan-led ATLAS analysis claims world-best sensitivity to the Higgs boson interacting with itself, using machine learning on data already in hand, four years before the LHC upgrade.
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Product · August 18, 2026 · 1 publisher