Search for Susy with Missing Transverse Energy and Jets at CDF

TL;DR

This paper reports on searches for supersymmetry at CDF using events with missing transverse energy and jets, setting limits on supersymmetric particles and models based on the observed data.

Contribution

It introduces new limits on supersymmetric particles and models using MET and jets signatures, including model-independent and specific scalar quark searches.

Findings

No excess observed over Standard Model predictions

Limits set on supersymmetry breaking parameters and gravitino mass

Constraints on scalar top and bottom quark masses

Abstract

Events with signatures involving large missing transverse energy (MET) are among the quintessential search modes for R-parity conserving supersymmetry. CDF has conducted two recent analyses for supersymmetry which use MET and jets. The MET and monojet signature is employed to determine process independent limits for the production of new physics beyond the Standard Model and then applied to models of spontaneous breaking of supersymmetry to determine limits on the supersymmetry breaking parameter and the gravitino mass. Direct searches for scalar top and scalar bottom quarks within the framework of supersymmetric models are performed using a signature of MET and two heavy flavor jets. Since the data is found to be consistent with Standard Model expectations, limits are determined in the mass planes $m (\tilde{\chi}_{1}^{0}) - m (\tilde{t}_{1})$ and $m (\tilde{\chi}_{1}^{0}) - m (\tilde{b}_{1})$.