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Fermion mass effects in e+e- --> 4f and e+e- --> 4f gamma with cuts

F. Jegerlehner, K. Kolodziej

hep-pharXiv:hep-ph/0012250

Abstract

The fermion mass effects in e+ e- --> 4f and in the corresponding bremsstrahlung reactions in the presence of realistic cuts are studied. It is shown that, for some four--fermion final states, the mass effects become sizeable to the extent that they may affect the accuracy of theoretical predictions which is required to be better than 1%.

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