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Resonance searches generally focus on narrow states that would produce asharp peak rising over background. Early LHC running will, however, besensitive primarily to broad resonances. In this paper we demonstrate thatstatistical methods should suffice to find broad resonances and distinguishthem from both background and contact interactions over a large range ofpreviously unexplored parameter space. We furthermore introduce an angularmeasure we call ellipticity, which measures how forward (or backward) the muonis in eta, and allows for discrimination between models with different parityviolation early in the LHC running. We contrast this with existing angularobservables and demonstrate that ellipticity is superior for discriminationbased on parity violation, while others are better at spin determination.

Early (and Later) LHC Search Strategies for Broad Dimuon Resonances