Abstract
O(100 GeV) physics beyond the standard model could be overlooked provided that it is hidden in jets or the untouched Higgs sector. The top-quark forward-backward asymmetry measurements as well as dijet bump, which is observed by CDF in association with charged lepton plus missing energy (supposed arising from $W$ decay), may indicate the existence of a new color-octet axial vector ${Z}_{C}$ with a mass of about 145 GeV. Here, ${Z}_{C}$ decays into two jets with a certain branching ratio. In this paper, we investigated the possibility to discover ${Z}_{C}$ pair via analyzing the four jets as the final states, which are heavily polluted by huge QCD background. Our simulation showed that, however, both Tevatron and LHC have the excellent chance to discover ${Z}_{C}$ through analyzing the four-jet events with accessible integrated luminosity and good control of QCD background.
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