Speaker
Description
We present results of searches for massive vector-like quark partners using proton-proton collision data collected with the CMS detector at the CERN LHC at a center-of-mass energy of 13 TeV. These fourth-generation quarks are postulated to solve the Hierarchy problem and stabilize the Higgs mass, while escaping constraints on the Higgs cross section measurement. The vector-like quark can be produced singly or in pairs and their decays result in a variety of final states containing top and bottom quarks, as well as gauge and Higgs bosons. We search using several categories of reconstructed objects from multi-leptonic to fully hadronic final states. we set exclusion limits on both the vector-like quark mass and cross sections for combinations of the vector-like quark branching ratios.
