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Many new physics models with strongly interacting sectors predict a masshierarchy between the lightest vector meson and the lightest pseudoscalarmesons. We examine the power of jet substructure tools to extend the 7 TeV LHCsensitivity to these new states for the case of QCD octet mesons, consideringboth two gluon and two b-jet decay modes for the pseudoscalar mesons. Wedevelop both a simple dijet search using only the jet mass and a moresophisticated jet substructure analysis, both of which can discover thecomposite octets in a dijet-like signature. The reach depends on the masshierarchy between the vector and pseudoscalar mesons. We find that for thepseudoscalar-to-vector meson mass ratio below approximately 0.2 the simple jetmass analysis provides the best discovery limit; for a ratio between 0.2 andthe QCD-like value of 0.3, the sophisticated jet substructure analysis has thebest discovery potential; for a ratio above approximately 0.3, the standardfour-jet analysis is more suitable.

Composite Octet Searches with Jet Substructure