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Updated: Jun 3, 2026
07:46
Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Search for single vectorlike quarks in pp ̄ collisions at √s=1.96 TeV
V M Abazov1, B Abbott, B S Acharya
1Joint Institute for Nuclear Research, Dubna, Russia.
Physical Review Letters
|March 17, 2011
Summary
Physicists searched for new heavy particles called vectorlike quarks using data from the Fermilab Tevatron Collider. No evidence was found, leading to new limits on their production in W+jet and Z+jet events.
Area of Science:
- High Energy Physics
- Particle Physics
- Collider Physics
Background:
- Vectorlike quarks are hypothetical particles predicted by some extensions of the Standard Model.
- Searches for new particles are crucial for understanding fundamental physics beyond the Standard Model.
Purpose of the Study:
- To search for hypothetical vectorlike quarks produced in proton-antiproton collisions.
- To set limits on the production cross sections of vectorlike quarks decaying into W+jet and Z+jet final states.
Main Methods:
- Analysis of data collected by the D0 detector at the Fermilab Tevatron Collider.
- Selection of events with a final state consisting of a W or Z boson and a jet.
- Comparison of observed event yields with Standard Model background predictions.
Main Results:
- No significant excess of events beyond the expected background was observed.
- Limits were set on the production cross sections for vectorlike quarks decaying to W+jet and Z+jet.
Conclusions:
- The results provide the most stringent limits to date on electroweak single vectorlike quark production at hadron colliders.
- The absence of a signal places constraints on theoretical models predicting the existence of vectorlike quarks.
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