Hard-Photon Emission in e+e- to bar-f f with Realistic Cuts

Abstract

We derive compact analytical formulae of the Bonneau-Martin type for the reaction e+e- to bar-f f gamma with cuts on minimal energy and acollinearity of the fermions, where the photons may be emitted both from the initial or final states. Soft-photon exponentiation is also taken into account.

Comments: 7 pages, Latex, 1 figure; a typo fixed, version to appear in Phys. Lett. B