Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-12-11
Nucl.Phys.B777:1-34,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
38 pages, LaTeX
Scientific paper
10.1016/j.nuclphysb.2007.04.021
In this paper the building blocks for the two-loop renormalization of the Standard Model are introduced with a comprehensive discussion of the special vertices induced in the Lagrangian by a particular diagonalization of the neutral sector and by two alternative treatments of the Higgs tadpoles. Dyson resummed propagators for the gauge bosons are derived, and two-loop Ward-Slavnov-Taylor identities are discussed. In part II, the complete set of counterterms needed for the two-loop renormalization will be derived. In part III, a renormalization scheme will be introduced, connecting the renormalized quantities to an input parameter set of (pseudo-)experimental data, critically discussing renormalization of a gauge theory with unstable particles.
Actis Stefano
Ferroglia Andrea
Passarino Giampiero
Passera Massimo
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