The search centers on Bs0 → μ+μ−, a holy grail of particle physics. Seeing it at the predicted rate confirms the Standard Model and puts limits on theories beyond it. #StandardModel #LargeHadronCollider #RareDecay

In the Standard Model, that decay is vanishingly rare. Any difference would point to new physics. Biasini co-authored the combined CMS and LHCb analysis that finally observed it. #physicsresearch #raredecay #discovery #collaboration