Speaker
Abstract:
Determining the quantum numbers of new pair-produced colored particles, and even discovering them, can be non-trivial, if their decays are difficult (e.g., include jets only). We suggest that valuable information can be obtained by measuring the resonant signals of their near-threshold QCD bound states. If the particles are charged, the resulting signatures include photons and leptons and are sufficiently rich for unambiguously determining their various quantum numbers, including the charge, color representation and spin, and obtaining a precise mass measurement. These signals provide well-motivated benchmark models for resonance searches in the diphoton, photon+jet, dijet, and dilepton channels, which would be sensitive to such particles regardless of how obscure their decays might be (as long as they have no unsuppressed two-body decays). Limits on new colored particles will be presented based on the 2011 LHC data.