Two-loop renormalization in the standard model. part I: Prolegomena

被引:40
作者
Actis, Stefano
Ferroglia, Andrea
Passera, Massimo
Passarino, Giampiero [1 ]
机构
[1] Univ Turin, Dipartimento Fis Teor, I-10124 Turin, Italy
[2] DESY, Deutsches Elect Synchroton, D-15738 Zeuthen, Germany
[3] Univ Freiburg, Fak Phys, D-7800 Freiburg, Germany
[4] Univ Zurich, Inst Theoret Phys, CH-8001 Zurich, Switzerland
[5] Univ Padua, Dipartimento Fis, Padua, Italy
[6] Ist Nazl Fis Nucl, Sez Padova, Padua, Italy
[7] Ist Nazl Fis Nucl, Sez Torino, Padua, Italy
关键词
Feynman diagrams; multi-loop calculations; self-energy diagrams; Vertex diagrams;
D O I
10.1016/j.nuclphysb.2007.04.021
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
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. (C) 2007 Published by Elsevier B.V.
引用
收藏
页码:1 / 34
页数:34
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