The Large Hadron Collider's Latest Upgrade Helped It Reveal a New Quantum Particle
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By Graham Templeton
Published on March 20, 2026.
CERN has revealed a new quantum particle at the Large Hadron Collider (LHC) called the Xi-cc-plus, which is believed to last only a sixth as long as known particles. This is the first new particle revealed by LHCb Upgrade 1, installed in 2023, which fundamentally changed the experiment's function. The biggest upgrade was to the number of particles it can collide within a given timeframe, allowing for more data. The new detector also increased its "vertex resolution" to detect smaller perturbations in the particles it studies. The High Luminosity LHC upgrade aims to increase the luminosity of the main experiment by a factor of 10, thereby increasing the cadence of insights it can produce.
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