particle decay

基本解释

The "normal" thing is for a particle to undergo decay and transmute itself into other lighter particles.
粒子发生衰变，本身蜕变为其它较轻的粒子，这是“正常”的事。
The W- particle will then decay in a characteristic way, leaving an unambiguous record of the neutrino’s passage.
W粒子随后会以一种特有的方式消亡，毫不含糊地在中微子穿过的路径上留下痕迹。
A quantum property of the charm quark whose conservation explains the absence of certain strange-particle decay modes and that accounts for the longevity of the J particle.
分子量夸克粒子的一种量子属性，夸克粒子的存在说明了某些特别粒子腐蚀模式的缺乏，这也是J粒子存在时间长的原因。

At the time of Higgs' discovery, observers were especially interested in the possibility that this mysterious particle didn't decay in exactly the way science had predicted.
ENGADGET
Radioactive decay happens when a radioactive substance emits a particle.
FORBES: Radioactive Decay Rates May Not Be Constant After All
What could happen in beta decay is another elusive issue, but a new particle could be implicated there.
FORBES: Higgs Boson Discovery Has Been Confirmed