Radiation of light fermions in heavy fermion production
1995
Abstract The rate for the production of a pair of massive fermions in e + e − annihilation plus real or virtual radiation of a pair of massless fermions is calculated analytically. The contributions for real and virtual radiation are displayed separately. The asymptotic behaviour close to threshold and for high energies is given in a compact form. These approximations provide arguments for the appropriate choice of the scale in the O(a) result, such that no large logarithms remain in the final answer.
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