TY - JOUR

T1 - Non-linear realizations of SU (2) × U (1) in the MSSM. Model independent analysis and g-2 of W bosons

AU - Ferrara, Sergio

AU - Masiero, Antonio

AU - Porrati, Massimo

N1 - Funding Information:
Work supported m part by the Department of Energy of the United States under contract no. DOE-AT03-88ER40384 Task C On leave of absence from IstItUtO Nazionale dl Flsica Nucleate, Sezlone dl Padova, Padua, Italy On leave of absence from IstltUtO Nazlonale di Flslca Nucle-are, Sezlone d~ Plsa, Plsa, Italy Soft breaking terms may be thought of as rehcs of spontaneously broken supergravity \[6\], which, in turn, may arise as the low-energy effective action of superstrlng theory \[7 \].

PY - 1993/3/11

Y1 - 1993/3/11

N2 - We perform a model-independent analysis of the spontaneously broken phase of an SU (2) × 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 VEV 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.

AB - We perform a model-independent analysis of the spontaneously broken phase of an SU (2) × 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 VEV 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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U2 - 10.1016/0370-2693(93)91163-H

DO - 10.1016/0370-2693(93)91163-H

M3 - Article

AN - SCOPUS:3042971458

SN - 0370-2693

VL - 301

SP - 358

EP - 364

JO - Physics Letters B

JF - Physics Letters B

IS - 4

ER -