Signals of single particle production at the earliest LHC

Abstract

Based on simple phenomenological Lagrangians, fulfilling reasonable consistency conditions, we consider under which circumstances the production of a single particle might be an early signal of new physics at the LHC. Effective final states are $\gamma \gamma$ and $\gamma +jet$ already with tens of inverse picobarns of integrated luminosity at 7 TeV.

Comments: 8 pages, 10 figures