Search for SUSY at LHC in Jets + E^{miss}_T final states for the case of nonuniversal gaugino masses

TL;DR

This paper explores the detection prospects of supersymmetry at the LHC through jets plus missing energy signals, focusing on scenarios with nonuniversal gaugino masses and varying mass hierarchies.

Contribution

It provides a detailed analysis of how nonuniversal gaugino masses affect SUSY signal visibility in jets + missing energy channels at the LHC.

Findings

Signal visibility decreases with increasing LSP mass.

Heavy LSPs close to squark or gluino masses make signals unobservable.

b-tagging is necessary for signals with only third-generation squarks and LSPs.

Abstract

We investigate squark and gluino pair production at LHC (CMS) with subsequent decays into quarks and LSP for the case of nonuniversal gaugino masses. Visibility of signal by an excess over SM background in (n > 1)jets + E^{miss}_T events depends rather strongly on the relation between LSP, gluino and squark masses and it decreases with the increase of LSP mass. For relatively heavy LSP mass closed to squark or gluino masses and for (m_{\tilde{q}}, m_{\tilde{g}}) > 1.5 TeV signal is too small to be observable. For the case when only third generation squarks and LSP are relatively light signal is not visible without b-tagging.