CERN Observes Rare Zeptoverse Decay

Scientists at CERN recently observed a rare particle decay into a muon and antimuon, a phenomenon predicted to occur once in 10 billion neutral B meson decays. This first evidence, published on arXiv, results from 2024 Large Hadron Collider upgrades and machine-learning techniques that suppressed background noise, marking a milestone after four decades of searching for this event.