Renormalization group and relations between scattering amplitudes in a theory with different mass scales
arXiv:hep-ph/9811286 · doi:10.1134/1.855613
Abstract
In the Yukawa model with two different mass scales the renormalization group equation is used to obtain relations between scattering amplitudes at low energies. Considering fermion-fermion scattering as an example, a basic one-loop renormalization group relation is derived which gives possibility to reduce the problem to the scattering of light particles on the "external field" substituting a heavy virtual state. Applications of the results to problems of searching new physics beyond the Standard Model are discussed.
10 pages, 2 figures, LaTeX