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

Sergio Ferrara; Antonio Masiero; Massimo Porrati

doi:10.1016/0370-2693(93)91163-h

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arXiv · hep-ph/9212211

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

Sergio Ferrara·Antonio Masiero·Massimo Porrati

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Abstract

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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Sergio Ferrara, Antonio Masiero, Massimo Porrati. 1992-12-02. Non Linear Realizations of $SU(2)\times U(1)$ in the MSSM: Model Independent Analysis and $g-2$ of $W$ Bosons. https://doi.org/10.1016/0370-2693(93)91163-h

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