Top Dipole Form Factors and Loop-induced CP-violation in Supersymmetry

Details Top Dipole Form Factors and Loop-induced CP-violation in Supersymmetry Top Dipole Form Factors and Loop-induced CP-violation in Supersymmetry

1998-12-09

arxiv.org/abs/hep-ph/9812298v3

Nucl.Phys. B551 (1999) 3-40; Erratum-ibid. B557 (1999) 407-409

Physics

High Energy Physics

High Energy Physics - Phenomenology

43 pages LaTeX. PS figures included with epsf.sty. Labels `N' and `T' in Tables 2,3 exchanged

Scientific paper

10.1016/S0550-3213(99)00201-1

The one-loop Minimal Supersymmetric Standard Model (MSSM) contributions to the weak and electromagnetic dipole form factors of the top quark are presented. Far from the Z peak, they are not sufficient to account for all the new physics effects. In the context of the calculation of the process e^+e^- -> t tbar to one loop in the MSSM, we compare the impact on the phenomenology of the CP-violating dipole form factors of the top quark with the contribution from CP-violating box graphs. Some exemplificative observables are analyzed and the relevance of both the contributions is pointed out. The one-loop expressions for the electromagnetic and weak dipole form factors in a general renormalizable theory and the SM and MSSM couplings and conventions are also given.

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