Search for new physics in the multijet and missing transverse momentum final state in proton-proton collisions at sqrt(s) = 7 TeV

TL;DR

This paper reports a search for new physics beyond the standard model in proton-proton collisions at 7 TeV, focusing on events with multiple jets and missing transverse momentum, setting new exclusion limits on supersymmetric particles.

Contribution

The study provides the first constraints on gluino and squark masses using 7 TeV collision data with a large dataset, extending previous search limits significantly.

Findings

No significant excess observed over background

Gluino masses below 1.0 TeV are excluded

Squark masses below 0.76 TeV are excluded

Abstract

A search for physics beyond the standard model is performed in events with at least three jets and large missing transverse momentum produced in proton-proton collisions at sqrt(s) = 7 TeV. No significant excess of events above the expected backgrounds is observed in 4.98 inverse femtobarns of data collected with the CMS detector at the Large Hadron Collider. The results are presented in the context of the constrained minimal supersymmetric extension of the standard model and more generically for simplified models. For the simplified models of gluino-gluino and squark-squark production, gluino masses below 1.0 TeV and squark masses below 0.76 TeV are excluded in case the lightest supersymmetric particle mass is below 200 GeV. These results significantly extend previous searches.