Non Linear Realizations of $SU(2)\times U(1)$ in the MSSM: Model Independent Analysis and $g-2$ of $W$ Bosons

Details Non Linear Realizations of $SU(2)\times U(1)$ in the MSSM: Model Independent Analysis and $g-2$ of $W$ Bosons Non Linear Realizations of $SU(2)\times U(1)$ in the MSSM: Model Independent Analysis and $g-2$ of $W$ Bosons

1992-12-02

arxiv.org/abs/hep-ph/9212211v1

Phys.Lett. B301 (1993) 358-364

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages

Scientific paper

10.1016/0370-2693(93)91163-H

We perform a model-independent analysis of the spontaneously broken phase of an $SU(2)\times U(1)$ supersymmetric gauge theory, by using a non-linear parametrization of the Goldstone sector of the theory. The non-linear variables correspond to an $SL(2,C)$ superfield matrix in terms of which a non-linear Lagrangian can be constructed, and the pattern of supersymmetry breaking investigated. The supersymmetric order parameter is the V.E.V. of the neutral pseudo-Goldstone boson. Some applications of this technique are considered, in relation to the minimal supersymmetric standard model, and to determine the $g-2$ of the $W$-bosons in the limit of large top mass.

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