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We present a phenomenological study of neutral gauge bosons and fermions inan extended Standard model with SU(3)C x SU(4)L x U(1)X gauge symmetry.Themodel includes gauge bosons and fermions without exotic charges and isdistinguished by the symmetry-breaking patern SU(4)L->SU(2)L x SU(2)H x U(1)AH.This introduces an extended electroweak symmetry group SU(2)L x SU(2)H at lowenergies.We recover the fermion spectra of an anomaly-free three-family 3-4-1modelwithout exotic chargesfor U(1)X charge X = T3R+(B-L)/2.The interaction ofphysical neutral gauge bosons Zprime,Z double prime and exotic fermions arepresented along with their masses and mixing angle.The electroweak constraintsfrom oblique corections on the model are also calculated.

Gauge bosons and fermions in SU(3)C x SU(4)L x U(1)X model with SU(2)H xU(1)AH symmetry