Unifiable supersymmetric left-right model with E6 particle content

A new supersymmetric gauge model is proposed with particle content chosen only from the 27 and 27∗ representations of E6. The gauge symmetry SU(3) × SU(2)l × U(1) is realized at the TeV energy scale and the gauge couplings converge to a single value at around 1016 GeV. A discrete Z4 × Z2 symmetry leads to a generalized definition of lepton number and ensures the absence of tree-level flavor-changing neutral-current interactions at the electroweak energy scale.