欧洲核子研究中心（ CERN ）的科学家们终于发现了粒子衰变如此罕见的证据，以至于它在大约100亿次衰变中只发生一次，结束了长达40多年的搜索。这一突破可以帮助物理学家发现CERN scientists have finally found evidence of a particle decay so rare that it happens only once in roughly 10 billion decays, ending a search spanning more than 40 years. The breakthrough could help physicists uncover