Radiative Correction to e^+e^-→e^+e^- in the Electroweak Theory. II : Corrected Elastic Cross Section and Positron Energy Spectrum : Particles and Fields

概要

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Lowest order radiative correction to the Bhabha scattering, e^+e^-→e^+e^-, is calculated in the standard electroweak theory. The real and hard photon emission is included so as to satisfy a realistic experimental condition. The corrected differential cross sections, (dσ/dΩ)_<ζ<ζc,q±0>E_<th> are given at √s=70,93 and 150 GeV. An acollinearity angle cut, ζ_c=10゜, and a threshold energy cut, E_<th>=20 GeV, for the energies of the final e^+ and e^-, q_<+0> and q_<-0> are imposed. The energy spectrum of scattered positron at fixed angle, dσ/dq_<+0>dcosθ, is also given which will be helpful for luminosity measurement of the colliding beams or background estimation due to radiative Bhabha scattering.
理論物理学刊行会の論文
1986-04-25