不稳定希格斯粒子与等价定理
高能物理 - 唯象学
2014-11-17 v4
摘要
我们考虑了将等价定理应用于不稳定希格斯粒子衰变时涉及的细微之处。这在形式上通过考虑稳定衰变产物的幺正性和共振弹性散射得到严格证明。通过显式微扰计算，我们发现该衰变的一圈振幅的虚部仅在考虑了不稳定粒子四动量平方的复壳层值处求值生成的虚部时，才与等价定理一致。
引用
@article{arxiv.hep-ph/9804392,
title = {Unstable Higgs Particle and the Equivalence Theorem},
author = {R. S. Willey},
journal= {arXiv preprint arXiv:hep-ph/9804392},
year = {2014}
}
备注
21 pages, 4 figures, uses axodraw.sty Imaginary terms generated from tree-level amplitudes evaluated at complex pole mass of unstable Higgs particle combine with previously computed imaginary parts of one-loop amplitudes to bring agreement with the Equivalence Theorem.Latest revision:some (compensating)algebraic errors are corrected.Results and conclusions unchanged