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The two-loop vector form factor in the Sudakov limit

  • B. JantzenEmail author
  • V.A. Smirnov
Theoretical Physics

Abstract

Recently two-loop electroweak corrections to the neutral current four-fermion processes at high energies have been presented. The basic ingredient of this calculation is the evaluation of the two-loop corrections to the Abelian vector form factor in a spontaneously broken SU(2) gauge model. Whereas the final result and the derivation of the four-fermion cross sections from evolution equations have been published earlier, the calculation of the form factor from the two-loop Feynman diagrams is presented for the first time in this paper. We describe in detail the individual contributions to the form factor and their calculation with the help of the expansion by regions method and Mellin–Barnes representations.

Keywords

Form Factor Gauge Boson Higgs Mass Integration Contour Goldstone Boson 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  1. 1.Paul Scherrer InstitutVilligen PSISwitzerland
  2. 2.Institut für Theoretische TeilchenphysikUniversität KarlsruheKarlsruheGermany
  3. 3.Nuclear Physics InstituteMoscow State UniversityMoscowRussia
  4. 4.II. Institut für Theoretische PhysikUniversität HamburgHamburgGermany

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