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An electroweak library for the calculation of EWRC to e+ e- --> f fbar within the CalcPHEP project

D. Bardin·L. Kalinovskaya·G. Nanava
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Abstract

We present a description of calculations of the electroweak amplitude for e+ e- --> f fbar process. The calculations are done within the OMS (on-mass-shell) renormalization scheme in two gauges: in Rxi, which allows an explicit control of gauge invariance by examining cancellation of gauge parameters and search for gauge-invariant subsets of diagrams, and in the unitary gauge as a cross-check. The formulae we derived are realized in a FORTRAN code eeffLib, which is being created within the framework of the project CalcPHEP. We present a comprehensive comparison between eeffLib results for the light top with corresponding results of the well-known program ZFITTER for the u ubar channel, as well as a preliminary comparison with results existing in the world literature.

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D. Bardin, L. Kalinovskaya, G. Nanava. 2001-12-12. An electroweak library for the calculation of EWRC to e+ e- --> f fbar within the CalcPHEP project. https://arxiv.org/abs/hep-ph/0012080

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