A trail to the origin of the Universe discovered in the baryons

Why is the Universe composed almost exclusively of matter? This question, one of the great puzzles of modern cosmology, has for decades challenged the standard model of physics, according to which matter and antimatter should have emerged in equal quantities during the Big Bang. To understand this imbalance, CERN researchers explore a fundamental phenomenon: the violation of the symmetry Charge-Parity (CP), which governs the behavior of matter a…