Radiative correction to e+e- → e+e- in the electroweak theory, 1

Various cross sections for radiative Bhabha scattering, e+e- → e+e- γ, are calculated in the standard electroweak theory. They contain distributions on photon energy dσ/dk, acollinearity angle dσ/d zeta, acoplanarity angle dσ/d phi, photon transverse momentum dσ/dk sub(T) and invariant mass of final e-γ system dσ/dM sub(eγ). In the calculation some realistic experimental cuts are imposed on the configuration of final particles and the energies are chosen to be 70, 93 and 150 GeV in accordance with TRISTAN, SLC and LEP. From the results we can see the effect of Z0-boson exchanged in the s- and t-channel and estimate backgrounds to such interesting processes as e+e- → νν-barγ, γ-tilde γ tilde γ and e+e- → e*e → e+e- γ. (author)