Search for supersymmetry with jets and missing transverse momentum: Additional model interpretations

This note describes a set of new model interpretations of the search for supersymme- try using final states with jets and missing transverse momentum. Limits are presented for Minimal Supersymmetric Standard Model scenarios with only squark and gluino production and decays for different masses of the lightest supersymmetric particle (LSP), and in a model of Minimal Universal Extra Dimensions (MUED). At the 95% confidence level, gluino (squark) masses below 700 (650) GeV are excluded for LSP masses up to 200 GeV assuming direct decays, with the squark (gluino) mass set to 4.5 TeV. Equal-mass squarks and gluinos are excluded below 1025 GeV for LSP masses up to 400 GeV. Less stringent limits are set on gluino production with a single step cascade decay via a chargino. Analogous single-step squark decays are not bounded when the nominal production cross sections and branching fractions are assumed. In a MUED model with one extra dimension, a bound of 600 GeV is set on the compactification scale R^−1, for values of the compression scale Λ·R between 2 and 40, translating to a lower bound of 730 GeV on the mass of the Kaluza-Klein gluon. These are the most stringent constraints on MUED from direct collider searches.