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 -