Bulletin of the American Physical Society
APS April Meeting 2024
Wednesday–Saturday, April 3–6, 2024; Sacramento & Virtual
Session G07: Beyond the Standard Model II
10:45 AM–12:09 PM,
Thursday, April 4, 2024
SAFE Credit Union Convention Center
Room: Ballroom A9, Floor 2
Sponsoring
Unit:
DPF
Chair: Joel Butler, Fermilab
Abstract: G07.00002 : Search for Pair-Produced Vector-Like Quarks in the All-Hadronic Final State using the Boosted Event Shape Tagger with Full Run 2 Data Collected by CMS*
10:57 AM–11:09 AM
Presenter:
Samantha Abbott
(University of California, Davis)
Author:
Samantha Abbott
(University of California, Davis)
Collaboration:
CMS
We present a search for hadronically-decaying pair-produced vector-like quarks (T/B) in data collected by the CMS detector during the Run 2 data taking period. The analysis is performed using the Boosted Event Shape Tagger (BEST): a multi-class jet tagger optimized for the boosted heavy particle final state jets. We train a neural-net-based tagger to identify high momentum, large-radius jets as originating from one of six particle classes: QCD (light jets), bottom, W, Z, Higgs, and top. Data are triggered on high calorimeter activity, requiring events with a scalar sum of jet transverse momenta of at least 1600 $\GeV$. The dominant multi-jet background is estimated from a data-driven process in a QCD-rich three-jet region. The signal regions are categorized based on the classification of the four leading jets of the event. A statistical analysis is performed simultaneously across all regions and compared to the standard model only hypothesis.
*This project was funded by the Department of Energy (DOE).
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