ε′/ε anomaly and neutron EDM in SU(2)L x SU(2)R x U(1)B-L model with charge symmetry

The Standard Model prediction for epsilon'/epsilon based on recent lattice QCD results exhibits a tension with the experimental data. We solve this tension through W-R(+) gauge boson exchange in the SU(2)(L) x SU(2)(R) x U(1)(B-L) model with 'charge symmetry', whose theoretical motivation is to attribute the chiral structure of the Standard Model to the spontaneous breaking of SU(2)(R) x U(1)(B-L) gauge group and charge symmetry. We show that M-WR < 58 TeV is required to account for the epsilon'/epsilon anomaly in this model. Next, we make a prediction for the neutron EDM in the same model and study a correlation between epsilon'/epsilon and the neutron EDM. We confirm that the model can solve the epsilon'/epsilon anomaly without conflicting the current bound on the neutron EDM, and further reveal that almost all parameter regions in which the epsilon'/epsilon anomaly is explained will be covered by future neutron EDM searches, which leads us to anticipate the discovery of the neutron EDM.