Speaker
Description
Direct searches for the vectorlike quarks (VLQs) generally assume that they decay exclusively to a third-generation quark and a heavy vector-boson or a Higgs. The current mass limits on the VLQs lie between $1.2-1.6$ TeV, for various weak representations and decays. These limits can relax drastically if the VLQs have additional decay(s). Here, we discuss a scenario where the VLQs decay substantially to a new singlet scalar (or pseudoscalar) that couples exclusively to the VLQs. Such a singlet state is well-motivated in many BSM models. We reinterpret the current bounds on the VLQs in this scenario and chart a model-agnostic roadmap to search for the VLQs with decay to a singlet (pseudo)scalar at the LHC. We discuss the possible signatures and identify a representative benchmark parameter set. We also discuss the strategies to isolate VLQ signatures amidst the huge SM background and their prospects at the HL-LHC.
| Session | Beyond the Standard Model |
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