Supersymmetric discovery potential and benchmarks for early runs ats=7 TeVat the LHC

Abstract

We carry out an analysis of the potential of the Large Hadron Collider (LHC) to discover supersymmetry in runs at $\sqrt{s}=7\text{ }\text{ }\mathrm{TeV}$ with an accumulated luminosity of $(0.1--2)\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of data. The analysis is done with both minimal supergravity and supergravity models with nonuniversal soft breaking. Benchmarks for early discovery with $(0.1--2)\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of data are given. We provide an update of $b$-tagging efficiencies in PGS 4 appropriate for LHC analyses. A large number of signature channels are analyzed, and it is shown that each of the models exhibited are discoverable at the $5\ensuremath{\sigma}$ level or more above the standard model background in several signature channels which would provide cross checks for a discovery of supersymmetry. It is shown that some of the benchmarks are discoverable with $0.1\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of data again with detectable signals in several channels.