Gauge Origin of Baryon Number Conservation and Suppressed Neutrino Masses From Five Dimensions

Abstract

We consider a 5D SUSY $SU(3{)}_c\times SU(2{)}_L\times U(1{)}_Y\times \mathcal{U}(1)$ model compactified on an $S^{(1)}/Z_2$ orbifold. To cancel anomalies arising from the presence of $\mathcal{U}(1)$, we employ a Chern-Simons term and also chiral fields which could reside on the brane or in the bulk depending on the model. The presence of $\mathcal{U}(1)$ symmetry leads to baryon number conservation, gives rise to matter parity, and permits satisfactory neutrino masses and mixings even for a low fundamental scale. The brane Fayet-Iliopoulos D-terms naturally break $\mathcal{U}(1)$, leaving N=1 SUSY unbroken in 4 dimensions.

17 pages, LaTex

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• Supersymmetric theories with compact extra dimensions in N=1 superfields
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• Baryon Number in Warped GUTs : Model Building and (Dark Matter Related) Phenomenology
• Gauged Baryon Parity and Nucleon Stability
• Low Energy Consequences of Five Dimensional SO(10)
• SU(4)_c x SU(2)_L x SU(2)_R model from 5D SUSY SU(4)_c x SU(4)_{L+R}
• Neutrino Democracy And Other Phenomenology From 5D SO(10)
• Neutrino Democracy, Fermion Mass Hierarchies And Proton Decay From 5D SU(5)