Search for New Physics with Delayed Jets in CMS

A large number of models for physics beyond the standard model predict long-lived particles that may be produced at the CERN LHC and decay into final states containing jets with missing transverse momentum, $p_{T}^{miss}$. These models include supersymmetry (SUSY) with gauge-mediated SUSY breaking (GMSB) [1], hidden valley models [2], etc. The $p_{T}^{miss}$ may arise from a stable neutral weakly interacting particle in the final state or from a heavy neutral long-lived particle that decays outside the detector. A representative GMSB model is used as a benchmark to quantify the sensitivity of the search. In this model, pair-produced long-lived gluinos each decay into a gluon, which forms a jet, and a gravitino, which escapes the detector causing significant $p_{T}^{miss}$ in the event (Fig. 40.1).