Higher order corrections to the process$e^ + e^ - \to v\bar vy$

Abstract

A calculation of the neutrino counting reaction$e^ + e^ - \to v\bar vy$ is presented and implemented in a Monte Carlo generator of unweighted events. The non-photonic corrections are included following the star-scheme. The photonic corrections have been exponentiated following the “inductive” and the “structure functions” approach. For a realistic experimental set-up, the total corrections around theZ ⁰ pole amount to ∼5% with respect to the one-loop result. The final precision achieved is better than 1%.