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\(\overline{MS}\) vs. pole masses of gauge bosons. II: Two-loop electroweak fermion corrections. (English) Zbl 1097.81929

Summary: We have calculated the fermion contributions to the shift of the position of the poles of the massive gauge boson propagators at two-loop order in the Standard Model. Together with the bosonic contributions calculated previously the full two-loop corrections are available. This allows us to investigate the full correction in the relationship between \(\overline{MS}\) and pole masses of the vector bosons \(Z\) and \(W\). Two-loop renormalization and the corresponding renormalization group equations are discussed. Analytical results for the master-integrals appearing in the massless fermion contributions are given. A new approach of summing multiple binomial sums has been developed.

MSC:

81V22 Unified quantum theories
81T15 Perturbative methods of renormalization applied to problems in quantum field theory
81T17 Renormalization group methods applied to problems in quantum field theory
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