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Bhabha scattering with higher order weak loop corrections

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Zeitschrift für Physik C Particles and Fields

Abstract

We present a compact incorporation of the weak loop effects in the Bhabha cross section with the accuracy required by the present precision experiments. Special care is taken of the leading 2-loop effects from a heavy top quark which are of the type α2(m t /M Z )4. We find very satisfactory agreement between two independent calculations which are based on different gauges and different renormalizations. The compact formulation in terms of form factors allows a straight-forward implementation into analytic or Monte Carlo QED calculations.

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Author notes

  1. T. Riemann

    Present address: Institut für Hochenergiephysik, Platanenallee 6, O-1615, Zeuthen, Federal Republic of Germany

Authors and Affiliations

  1. Joint Institute for Nuclear Research, Dubna, Head Post Office, P.O. Box 79, SU-101000, Moscow, USSR

    D. Bardin

  2. Werner-Heisenberg-Institut für Physik, Max-Planck-Institut für Physik and Astrophysik, P.O. Box 40 12 12, W-8000, München, Federal Republic of Germany

    W. Hollik & T. Riemann

Authors
  1. D. Bardin
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  2. W. Hollik
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  3. T. Riemann
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Bardin, D., Hollik, W. & Riemann, T. Bhabha scattering with higher order weak loop corrections. Z. Phys. C - Particles and Fields 49, 485–490 (1991). https://doi.org/10.1007/BF01549702

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  • DOI: https://doi.org/10.1007/BF01549702

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