Speaker
Description
Vector-like quarks (VLQ) are predicted in many extensions to the Standard Model (SM), especially those aimed at solving the hierarchy problem. Their vector-like nature allows them to extend the SM while still being compatible with electroweak sector measurements. In many models, VLQs decay to a SM boson and to a third-generation quark. Pair production of VLQ provides a model-independent method of searching due to the Quantum Chromodynamics production of the particles. This talk presents a search for pair production of vector-like top quarks that each decay into a SM W boson and a bottom quark, with one W boson decaying leptonically and the other decaying hadronically. The analysis takes advantage of boosted boson identification and data-driven correction of the dominant ttbar background prediction to improve sensitivity. Further, this analysis extends the previous analysis sensitivity by including the full 140$fb^{-1}$ dataset of $pp$ collisions at $\sqrt{s}=$13 TeV collected with the ATLAS detector.
| Are you are a member of the APS Division of Particles and Fields? | Yes |
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