Search for Gauge Extensions of the MSSM at the LHC

Abstract

The extensions of the minimal supersymmetric model (MSSM), driving mainly from the need to solve the μproblem, involve novel matter species and gauge groups. These extended MSSM models can be searched for at the LHC via the effects of the gauge and Higgs bosons or their fermionic partners. Traditionally, the focus has been on the study of the extra forces induced by the new gauge and Higgs bosons present in such models. An alternative way of studying such effects is through the superpartners of matter species and the gauge forces. We thus consider a $U(1{)}^{\prime }$ gauge extension of the MSSM, and perform an extensive study of the signatures of the model through the production and decays of the scalar quarks and gluino, which are expected to be produced copiously at the LHC. After a detailed study of the distinctive features of such models with regard to the signatures at the LHC, we carry out a detailed Monte Carlo analysis of the signals from the process pp-> n leptons + m jets + EMT, and compare the resulting distributions with those predicted by the MSSM. Our results show that the searches for the extra gauge interactions in the supersymmetric framework can proceed not only through the forces mediated by the gauge and Higgs bosons but also through the superpartner forces mediated by the gauge and Higgs fermions. Analysis of the events induced by the squark/gluino decays presented here is complementary to the direct Z' searches at the LHC.

58 pages, 22 figures and 6 tables

References in corpus (13)

• LHC Phenomenology of an Extended Standard Model with a Real Scalar Singlet
• Measuring Z' couplings at the LHC
• Revival of the Thermal Sneutrino Dark Matter
• Collider Signatures of Singlet Extended Higgs Sectors
• The Neutralino Sector in the U(1)-Extended Supersymmetric Standard Model
• U(1)' solution to the mu-problem and the proton decay problem in supersymmetry without R-parity
• Neutralino Signatures of the Singlet Extended MSSM
• Electroweak Contributions to Squark Pair Production at the LHC
• Searching for Extra Z' from Strings and Other Models at the LHC with Leptoproduction
• Signals of Doubly-Charged Higgsinos at the CERN Large Hadron Collider
• Explicit CP violation in a MSSM with an extra $U(1{)}^{\prime }$
• Neutral scalar Higgs bosons in the USSM at the LHC
• SUSY Searches in All-Hadronic States with Large MET at the LHC