Speaker
Description
Vector-like quarks (VLQ) are predicted in many extensions to the
Standard Model (SM) as their vector-like nature allows them to extend
the SM while still being compatible with electroweak sector
measurements. Pair production of VLQ provides a model-independent
method of searching due to the QCD production of the particles. While
most searches have focused on VLQs that decay to an SM boson and a
third-generation quark, decays to light quarks have been largely
overlooked. This talk presents the expected results of a search for pair production of vector-like down quarks that decay into a leptonically decaying SM W
boson and a light quark, with the other VLQ decaying to a hadronically
decay boson and a light quark. The analysis uses boosted
boson identification and data-driven correction of the dominant W+jets
background prediction to improve sensitivity. Further, this analysis
extends the sensitivity of previous analysis done in Run 1 by increasing
the collision energy and the statistics by including the full Run 2
ATLAS dataset with an integrated luminosity of 139 $fb^{-1}$.
| Career stage | Graduate student |
|---|
