# After 40 years of searching, physicists find evidence for an ultrarare particle decay

> **Open Intelligence Dossier** · First detected: 2026-11-06 01:20 UTC · Category: Science

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*Canonical Source: https://pulse.byoviral.com/trend/2026-11-06/after-40-years-of-searching-physicists-find-evidence-for-an-ultrarare-particle*