Decay Law of Moving Unstable Particle
Decay Law of Moving Unstable Particle
复制标题
运动不稳定粒子的衰变定律
DOI：
10.1023/b:ijtp.0000048637.97460.87
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发表时间：
2004
影响因子：
1.4
通讯作者：
M. Shirokov
中科院分区：
文献类型：
--
作者：
M. Shirokov
在Breit-Wigner质量分布模型下，解析计算了运动不稳定粒子的量子相对论衰变规律。事实证明，运动粒子衰变的爱因斯坦时间膨胀近似在衰变呈指数时成立。相关的修正是解析计算的。在这些时候，它非常小，实际上是不可观察的。它表明，爱因斯坦膨胀失败的大倍t时，衰减不是指数。本文还考虑了一个K 0介子（它是Ks和KI的叠加）的不稳定系统。在这种情况下，在一定条件下，爱因斯坦膨胀的破坏在任何时候都是明显的
Quantum relativistic decay law of moving unstable particle is analytically calculated in the model case of the Breit–Wigner mass distribution. It turns out that Einstein time dilation of the moving particle decay holds approximately at times when the decay is exponential. The related correction is calculated analytically. Being very small at these times it is practically unobservable. It is shown that Einstein dilation fails for large times t when decay is not exponential. An unstable system of the kind of K0-meson (which is the superposition of Ks and KI) is also considered. In this case, the violation of Einstein dilation is shown to be appreciable at all times under some condition