How low can SUSY go? Matching, monojets and compressed spectra
1 Universität Bonn, Physikalisches Institut - Nußallee 12, D-53115 Bonn, Germany, EU
2 Institute for Theoretical Particle Physics and Cosmology, RWTH Aachen - D-52056 Aachen, Germany, EU
Received: 19 July 2012
Accepted: 30 August 2012
If supersymmetry (SUSY) has a compressed spectrum then the current mass limits from the LHC can be drastically reduced. We consider a possible “worst case” scenario where the gluino and/or squarks are degenerate with the lightest SUSY particle (LSP). The most sensitive searches for these compressed spectra are via the final state LSPs recoiling against initial state radiation (ISR). We match the matrix element to the parton shower to accurately model the ISR. All current LHC SUSY and monojet analyses are employed and we find that for a scenario where the squarks are degenerate with the LSP and decoupled gluinos, . For gluinos degenerate with the LSP and decoupled squarks, . Finally, for equal-mass squarks and gluinos degenerate with the LSP, .
PACS: 14.80.Ly – Supersymmetric partners of known particles / 12.60.Jv – Supersymmetric models
© EPLA, 2012