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Physics

LHC finds intriguing new clues about our universe's antimatter mystery

Analysing the aftermath of particle collisions has revealed two new instances of “CP violation”, a process that explains why our universe contains more matter than antimatter

By Karmela Padavic-Callaghan

17 March 2025

LHCb Detector opening 2018

The LHCb detector at CERN

CERN

Were it not for a phenomenon called CP violation, we would probably not exist. A new analysis of particles smashing together at the Large Hadron Collider (LHC) is helping researchers better understand it.

“In cosmological models, we think that there was the same amount of matter and antimatter at the beginning of the universe, and then it evolved into a matter-dominated universe. But how?” says Ozlem Ozcelik at CERN, the particle physics laboratory near Geneva, Switzerland, home of the LHC.

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