منابع مشابه
Dipole formalism with heavy fermions
We extend the dipole formalism of Catani and Seymour to QCD processes involving heavy fermions. We give the appropriate subtraction terms together with their integrated counterpart. All calculations are done within dimensional regularization. Our formulae can be used with three variants of dimensional regularization (conventional dimensional regularization, the ’t Hooft-Veltman scheme or the fo...
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A minimal supersymmetric version of the Standard Model with complex parameters allows contributions to the weak–electric dipole moments of fermions at the one–loop level. Assuming generation–diagonal trilinear soft–susy–breaking terms and the usual GUT constraint, a set of CP–violating physical phases can be introduced. In this paper the general expressions for the one–loop contribution to the ...
متن کاملOne-loop Weak Dipole Form Factors and Weak Dipole Moments of Heavy Fermions
The one–loop weak–magnetic and weak–electric dipole form factors of heavy fermions in a generic model are derived. Numerical predictions for the τ lepton and b quark Weak Anomalous Magnetic and Electric Dipole Moments (AWMDM and WEDM) in the SM and MSSM are reviewed. The MSSM contribution to the τ (b) AWMDM could be, in the high tan β scenario, four (thirty) times larger than the Electroweak SM...
متن کاملSecond Order Formalism for Fermions
A new formulation of fermions based on a second order action is proposed. An analysis of the U(1) anomaly allows us to test the validity of the formalism at the quantum level. This formulation gives a new perspective to the introduction of parity non invariant interactions. PACS 11.10.-z , 11.30.Rd † Work partially supported by CICYT (Proyecto AEN 90-0030). ‡ Unite de Recherche des Universités ...
متن کاملOne–loop MSSM Contribution to the Weak Magnetic Dipole Moments of Heavy Fermions
The MSSM predictions at the one-loop level for the weak-magnetic dipole moments of the τ lepton and the b quark are analysed. The entire supersymmetric parameter space is scanned with the usual GUT constraint and common squark and slepton mass parameters. The real part of aτ is dominated by the chargino contribution, being the same order as the SM one or even larger in the high tan β region whe...
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2001
ISSN: 1029-8479
DOI: 10.1088/1126-6708/2001/04/006