Generalized Unitarity Method for Unstable Particles
Generalized Unitarity Method for Unstable Particles
复制标题
不稳定粒子的广义幺正法
作者：
G. Menezes
在具有不稳定粒子的理论中，幺正性通过在幺正性和中只包含稳定态来满足。因此，幺正性切割不能通过不稳定粒子。这对广义酉方法提出了挑战，广义酉方法的目的是通过分析酉割集来重建振幅。然而，在一些一般的物理条件下，也许一些方法的修改，我们证明了该方法仍然是可靠的单回路振幅包含共振。我们讨论一些简单的例子来说明这些功能。
In theories with unstable particles, unitarity is satisfied by the inclusion of only stable states in unitarity sums. Therefore, unitarity cuts are not to be taken through unstable particles. This presents a challenge to the generalized unitarity method, whose aim is to reconstruct amplitudes by analyzing sets of unitarity cuts. Nevertheless, under some general physical conditions, and perhaps some methodological modifications, we prove that the method is still reliable for one-loop amplitudes containing resonances. We discuss some simple examples which illustrate these features.
影响因子：
5
作者：
Donoghue, John F.;Menezes, Gabriel
通讯作者：
Menezes, Gabriel
影响因子：
5
作者：
K. Nakamura;K. Hagiwara;K. Hikasa;H. Murayama;M. Tanabashi;T. Watari;C. Amsler;M. Antonelli
通讯作者：
K. Nakamura;K. Hagiwara;K. Hikasa;H. Murayama;M. Tanabashi;T. Watari;C. Amsler;M. Antonelli