Semi-analytical calculation of QED radiative corrections to e+e- ff with special emphasis on kinematical cuts to the final state
M. A. Jack
Abstract
In this dissertation, a complete calculation of QED radiative corrections is presented for total cross sections and forward- backward asymmetries for s-channel fermion pair production in e+e- annihilation with kinematical cuts to the final state. This includes cuts on the maximal acollinearity angle thetaacol and on the minimal energies Emin of the final state fermion pair and on the cosine of the scattering angle of one fermion, costheta. The applied cuts pose a realistic alternative for leptonic final states compared to cuts on the invariant mass squared s' of the fermion pair and on costheta. The new formulae and the analysis presented in this thesis for high energies and luminosities form an essential building block for an upgrading of two-fermion codes like ZFITTER for a future e+e- Linear Collider.
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