Antimeson -

That tiny "longer" was the secret of the universe. According to the laws of physics, the Big Bang should have created equal amounts of matter and antimatter, leading to an immediate, total annihilation that left the universe empty and dark. But something had tipped the scales. Something had favored matter by just one part in a billion.

Elara realized she was looking at that "something" in real-time. This antimeson’s refusal to be a perfect mirror was a echo of the that allowed galaxies, stars, and humans to form from the leftover scraps of a cosmic explosion. The Final Decay antimeson

"It’s switching," she whispered. Her colleague, Marcus, leaned in. "We’ve seen mixing before, Elara. Why is this different?" That tiny "longer" was the secret of the universe

Particle seen switching between matter and antimatter at CERN Something had favored matter by just one part in a billion