摘要
Associated production of a baryonic Z <sup>′</sup> boson with the W boson can account for the excess in Wjj production observed by the CDF Collaboration at the Tevatron. We analyze other possible channels of this Z <sup>′</sup> at the Tevatron and at the LHC, including γZ <sup>′</sup> and ZZ <sup>′</sup> with Z <sup>′</sup> →jj. We show that the chances of confirming this baryonic Z <sup>′</sup> are better at the Tevatron than at the LHC because of the faster growing backgrounds at the LHC. Unfortunately the current systematic uncertainties of the order of 10% cannot yield any significant excess in both the γZ <sup>′</sup> and ZZ <sup>′</sup> channels at the Tevatron and also at the LHC. Nevertheless, the search using the bb̄ decay mode of Z <sup>′</sup> is much more feasible at the LHC, provided that the branching ratio B(Z <sup>′</sup> →bb̄)>0.1. In particular, the WZ <sup>′</sup> →ℓνbb̄ mode has a signal-to-background ratio larger than 1. Even with 1fb <sup>-</sup> 1 luminosity at the LHC, it can lead to a high significance level. The WZ <sup>′</sup> →ℓνbb̄ and γZ <sup>′</sup> →γbb̄ are also highly observable at the Tevatron. © 2011 American Physical Society.