One-loop corrections for e+e− annihilation into μ+μ− in the Weinberg model

Abstract

Analytical expressions for the cross section including all the one-loop
\nradiative corrections in the context of the Weinberg model are presented. The
\nsystematic calculation of one-loop diagrams has been carried out using a recently
\nproposed scheme. Numerical results are shown in a region from 40-200 GeV c.m.
\nenergy and different values of the scattering angle; they indicate that the percentage
\ncorrections are mainly due to soft photons. The only departure from QED-like
\ncorrections can be seen in a region where the lowest-order cross section is lowered by
\nweak-e.m. interference. In that region hard photon contributions are relatively
\nprominent and perhaps within experimental possibilities.