Z-peak subtracted representation of Bhabha scattering and search for new physics effects

  title={Z-peak subtracted representation of Bhabha scattering and search for new physics effects},
  author={Matteo Beccaria and Fernand M. Renard and Stefania Spagnolo and Claudio Verzegnassi},
  journal={Physical Review D},
We extend to the special case of Bhabha scattering the "Z-peak subtracted" representation previously applied to e+e- to f f(bar) (f different from e). This allows us to analyze the process at any energy while imposing in an automatic way the constraints set by high precision measurements at the Z peak. The procedure turns out to be particularly convenient for the search of a certain class of new physics effects at variable energy. A few examples are considered and the information thus obtained… 
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  • GeV at LEP”,
  • 1999

Phys. Rev. D54

  • Phys. Rev. D54
  • 1996

Phys. Lett. B255 Nucl. Phys. B351 Z.Phys. C44

  • Phys. Lett. B255 Nucl. Phys. B351 Z.Phys. C44
  • 1989

Phys. Rev. D48

  • Phys. Rev. D48
  • 1993

Phys. Lett. B449

  • Phys. Lett. B449
  • 1999

Phys. Rev. Lett

  • Phys. Rev. Lett
  • 1983

Phys. Rev. D57

  • Phys. Rev. D57
  • 1998

Phys. Comm

  • Phys. Comm
  • 1993