Investigating Boson Sector in an Extended Standard Model with $U(1{)}_D$ Symmetry

Abstract

We have investigated the boson sector in an extended standard model (SM) with additional $U(1{)}_D$ symmetry. In the proposed model, the singlet scalar and doublet scalar Higgs are added in addition to the SM-like scalar Higgs. These scalars are also coupled to the gauge boson fields. In this work, we calculate the masses of both gauge and scalar Higgs bosons. Their masses are obtained through spontaneous symmetry breaking using the Higgs fields with non-zero vacuum expectation values. We also study numerically the positivity conditions of the vacuum expectation value of the scalars. In particular, we perform scanning of the parameter space of the potential and study the obtained scalar mass dependence on the parameter of the model.

arXiv comment26 pages, 11 figures, 2 tables, accepted for publication in Physica Scripta

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Cited by in corpus (1)

• Vacuum Structure of an Extended Standard Model with $U(1{)}_D$ Symmetry