LHCb studies particle tipping the matter-antimatter scales

The LHCb experiment at CERN reports precise new measurements—but leaves open the question of why our matter-dominated universe exists


Today, CERN’s LHCb experiment announced new results in the study of the evolution of our matter-dominated universe.

The face-off between matter and antimatter was supposed to be a fair fight. The big bang should have created equal quantities of matter and antimatter, which are identical to one another but with some opposite properties such as charge. As matter and antimatter interacted over the past 13 billion or so years, they should have annihilated each other, stripping our young universe of its potential and leaving it a void. But physicists think something happened in those first moments to upset the balance, skewing the advantage slightly toward matter.

Symmetry has more