Abstract:
We study a variation to the SUSY Left–Right symmetric model based on the gauge group \(SU(3)_{c}×SU(2)_{L}×SU(2)_{R}×U(1)_{BL}\). Beyond the quark and lepton superfields we only introduce a second Higgs bidoublet to produce realistic fermion mass matrices. This model does not include any \(SU(2)_{R}\) triplets. We calculate renormalization group evolutions of soft SUSY parameters at the one-loop level down to low energy. We find that an \(SU(2)_{R}\) slepton doublet acquires a negative mass squared at low energies, so that the breaking of \(SU(2)_{R}×U(1)_{BL}→U(1)_{Y}\) is realized by a non-zero vacuum expectation value of a right-handed sneutrino. Small neutrino masses are produced through neutrino mixings with gauginos. Mass limits on the \(SU(2)_{R}×U(1)_{BL}\) sector are obtained by direct search results at the LHC as well as lepton-gaugino mixing bounds from the LEP precision data.
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