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Where Did All the Antimatter Go? This Mismatch in How Subatomic Particles Behave Could Hold a Clue
GENEVA, SWITZERLAND, JUL 16 – Scientists observed a 2.5% CP violation in baryon decays, marking the first evidence of matter-antimatter imbalance in particles that compose most visible matter, advancing fundamental physics.
- On Wednesday, the LHCb experiment at CERN reported the first observation of CP violation in baryon decays, published in Nature.
- Following the Big Bang, equal amounts of matter and antimatter formed, but the universe is now dominated by matter, with CP violation predicted in mesons years ago but never seen in baryons.
- Analyzing about 80,000 baryon decays, a 2.45% difference and a 5.2 sigma significance were found.
- Professor Volkas said `The amount of CP violation in the Standard Model is actually not sufficient to explain cosmological matter-antimatter asymmetry,' and authors concluded opening avenues for `new physics' searches.
- Looking ahead, LHCb plans to collect about 30 times more data, and as Vincenzo Vagnoni said, `more opportunities to test the Standard Model`.
31 Articles
31 Articles
CERN detects first matter-antimatter imbalance in Baryons, clue to universe's existence
Physicists at CERN have reported significant findings regarding the imbalance between matter and antimatter in a subatomic particle known as a baryon. This discovery may offer insights into the predominance of matter in the universe. According to the research, antiparticles, which are particles of antimatter, have the same mass as baryons but possess an opposite charge. It has been theorised that equal amounts of matter and antimatter should hav…
New discovery at Cern could hint at why our universe is made up of matter and not antimatter
Why didn’t the universe annihilate itself moments after the big bang? A new finding at Cern on the French-Swiss border brings us closer to answering this fundamental question about why matter dominates over its opposite – antimatter. Much of what we see in everyday life is made up of matter. But antimatter exists in much smaller quantities. Matter and antimatter are almost direct opposites. Matter particles have an antimatter counterpart that ha…
The world exists thanks to the victory of matter in the first of all battles. The cosmological postulates say that the Big Bang, the primal outburst that gave rise to the universe, generated as much matter as antimatter. The first, visible and constituted by atoms and particles, would have the second as its antithesis: exactly the same, but with opposite charge. In theory, both would have had to have annihilated each other shortly after the grea…
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