The upper bound of the lightest Higgs boson in a supersymmetric $SU(3{)}_L\otimes U(1{)}_X$ gauge model

Abstract

A supersymmetric version of the $SU(3{)}_L\otimes U(1{)}_X$ gauge model is presented. The model is embedded in a $SU(6{)}_L\otimes U(1{)}_X$ gauge group and it has been built up completely quiral anomaly free and without any exotic charges in the fermionic content. The Minimal Supersymmetric Standard Model can be seen as an effective theory of this larger symmetry. We analyze how the spectrum of the new model can shift the upper bound on the CP-even Higgs boson and we find that it can be moved up to 143 GeV.

arXiv commentUniversidad Nacional de Colombia, 14 pages, 2 figures, RevTeX. Typos corrected. Version be published in Physical Review D

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