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Antimatter - CERN science physics antimatter Antimatter Antimatter Paul Dirac (Image: Wikimedia) In 1928, British physicist Paul Dirac wrote down an equation that combined quantum theory and special relativity to describe the behaviour of an electron moving at a relativistic speed
The matter-antimatter asymmetry problem - CERN The matter-antimatter asymmetry problem The Big Bang should have created equal amounts of matter and antimatter So why is there far more matter than antimatter in the universe? The Big Bang should have created equal amounts of matter and antimatter in the early universe
Storing antihydrogen - CERN And because antimatter annihilates in a flash of energy when it interacts with regular matter, storing it presents a challenge Creating Antihydrogen The antimatter counterpart to the simplest atom, hydrogen, is a neutral antihydrogen atom, which consists of a positively charged positron orbiting a negatively charged antiproton
antimatter - CERN antimatter Several experiments at CERN study the properties of antimatter – material composed of antiparticles which have the same mass as matter particles but opposite charge
Probing dark matter using antimatter - CERN Dark matter and the imbalance between matter and antimatter are two of the biggest mysteries of the universe Astronomical observations tell us that dark matter makes up most of the matter in the cosmos but we do not know what it is made of On the other hand, theories of the early universe predict that both antimatter and matter should have been produced in equal amounts, yet for some reason
ALPHA experiment at CERN observes the influence of gravity on antimatter CERN’s Antimatter Factory is a unique facility in the world for producing and studying antimatter Two other experiments at this facility, AEgIS and GBAR, share with ALPHA the goal of measuring with high precision the gravitational acceleration of atomic antimatter Also at the Antimatter Factory is the BASE experiment
L’antimatière - CERN physics antimatter L’antimatière L’antimatière Paul Dirac, qui a prédit l'existence des antiparticules (Image : Fondation Nobel) En 1928, le physicien britannique Paul Dirac formulait une équation combinant la théorie quantique et la relativité restreinte pour décrire le comportement d’un électron se déplaçant à une vitesse
A new piece in the matter–antimatter puzzle - CERN Update 16 July 2025 The paper ‘Observation of charge-parity symmetry breaking in baryon decays’ originally released on 21 March 2025 has been published today in the journal Nature Original press release Yesterday, at the annual Rencontres de Moriond conference taking place in La Thuile, Italy, the LHCb collaboration at CERN reported a new milestone in our understanding of the subtle yet
The Antiproton Decelerator - CERN The Antiproton Decelerator (AD) is a unique machine that produces low-energy antiprotons for studies of antimatter, and “creates” antiatoms A proton beam coming from the PS (Proton Synchrotron) is fired into a block of metal These collisions create a multitude of secondary particles, including lots of antiprotons
Breakthrough in antimatter production - CERN In a paper published today in Nature Communications, researchers at the ALPHA experiment at CERN’s Antimatter Factory report a new technique that allows them to produce over 15 000 antihydrogen atoms – the simplest form of atomic antimatter – in a matter of hours “These numbers would have been considered science fiction 10 years ago,” said Jeffrey Hangst, spokesperson for the ALPHA