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。
But they could cause a proton to decay — a very big deal, if it turns out to be correct, since proton decay isn't allowed under the current Standard Model of particle physics.
但是它们可能导致质子衰变，如果这个假设被证明是正确的，这将是一个大问题。因为在现有粒子物理的标准模型中质子是不能衰变的。
An elemental particle "decides" which way to spin. A cosmic ray decides when to decay.
基本粒子自己“决定”自旋方式，宇宙射线自己决定何时衰变。
The first type discovered -- alpha decay -- is when a radioactive particle emits a Helium nucleus !
我们发现的第一种衰变方式——阿尔法衰变——是放射性粒子产生氦分子！
So these monopoles could well turn up in our particle acceleratorsor in the decay products of cosmic ray collisions in the upper atmosphere.
所以这些单极在粒子加速器里或者在高空大气宇宙射线的碰撞过程中可能会被找到。
Those more-refined analyses have not seen the hypothetical new particle, so for some reason it must not decay into bottom quarks.
那些更精细的分析并没有发现这种假设的粒子，所以，也许它因为某些原因并不会衰变成底夸克。
Studying the non-leptonic decay of B meson is an important task in particle physics, and any breakthrough in theory may take new blood to this field.
介子的两体非轻子衰变过程是粒子物理中一个很重要的研究课题，任何理论上的突破都会引起广泛的关注。
If the particle were then to decay into an electron and a ground-state dark matter particle, the electron would release gamma rays.
如果该粒子继续衰变为电子和基态的暗物质，该电子将释放伽马射线。
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 "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。
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