Compressed Supersymmetric Spectra at the Large Hadron Collider (LHC)

With the discovery of the Higgs boson, the Standard Model (SM) is complete. Experimental results, even precision tests involving higher order perturbative quantum chromodynamics (QCD) calculations, appear to confirm SM results. However, SM cannot be the final theory, and the quest for physics beyond the SM is very much alive. Of the beyond the SM scenarios, supersymmetry (SUSY) appears to be the most popular. Unfortunately, no signals of any new model, and in particular of supersymmetry, have been observed at the Large Hadron Collider (LHC). Given that no supersymmetry signals have been observed at the LHC, and the fact that constrained theories which can explain dark matter predict no visible signals at the LHC, it would appear useful to study extended versions of minimal supersymmetric standard model (MSSM). Supersymmetric secluded U(1)’ model with 3 additional scalars and neutralinos, in addition to the usual supersymmetric U(1)’ model spectrum gives rise to many more possibilities for compressed spectrum. That is, charginos, neutralinos and sleptons and sneutrinos would be light and close by, while the rest of the particles would be heavy. TO BE CON’T

Faculty Supervisor:

Mariana Frank

Student:

Partner:

University of Southampton

Discipline:

Physics

Sector:

Education

University:

Concordia University

Program: