An Orbifold Compactification with Three Families from Twisted Sectors

Abstract

We obtain a three generational $SU(3{)}_c\times SU(3{)}_w\times U(1{)}^4\times [SO(12)\times U(1{)}^2{]}^{\prime }$ model from an orbifold construction with the requirement that three generations arise from twisted sectors. There exist supersymmetric vacua realizing the standard model. In one example the anomalous $U(1)$ breaks the gauge symmetry down to $SU(3{)}_c\times SU(2{)}_w\times U(1{)}_Y\times SO(12{)}^{\prime }$.

11pages, phyzzx.tex, SNUTP 92-88

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