SU(2) x SU(2) x U(1) interpretations of the diboson and Wh excesses

Based on an SU(2) x SU(2) x U(1) effective theory framework (aka G221 models), we investigate a leptophobic SU(2)(L) x SU(2)(R) x U(1)(B-L) model in which the right-handed W0 boson has the mass of around 2 TeV and predominantly couples to the standard model quarks and the gauge-Higgs sector. This model could explain the resonant excesses near 2 TeV reported by the ATLAS Collaboration in the WZ production decaying into hadronic final states and by the CMS Collaboration in the Wh channel decaying into the b (b) over barl nu and dijet final state. After imposing the constraints from the electroweak precision and current LHC data, we find that to explain the three excesses in the WZ, Wh, and dijet channels, the SU(2)(R) coupling strength g(R) favors the range of 0.47-0.68. In this model, given a 2 TeV W' mass, the Z' mass is predicted to favor 2-3 TeV if the doublet Higgs (LPD) is used to break the G221 symmetry at the TeV scale and 3-5 TeV for the triplet Higgs (LPT) scenario. Although the LPD Z' might be in tension with the current dilepton resonance searches, the heavier LPT Z' is consistent with current bounds, whose signatures can be further explored by the LHC Run 2 data.