Search for Scalar Leptoquark Pair Production Decaying into Top-Quarks and Leptons at √s = 13 TeV with ATLAS detector
Bibliographic record
Abstract
This contribution presents a search for pair-produced scalar leptoquarks decaying to leptons and hadronically decaying top quarks at the LHC using 139 fb$^{-1}$ of proton$-$proton collision data collected with the ATLAS detector at $\sqrt{s}=13$ TeV. Leptoquarks are predicted by various extensions of the Standard Model to draw the similarity between the quark and lepton sectors, and they provide a promising explanation for anomalies observed in both the lepton universality tests in $B$ decays and the muon anomalous magnetic moment measurement. Searches for pair-produced scalar leptoquarks decaying into electron$-$top or muon$-$top pairs have been performed in final states with exactly two leptons. A parameterized gradient boosted decision tree approach is used to suppress the Standard Model backgrounds. No excess over the Standard Model prediction was observed. Exclusion limits on the leptoquark masses are set at 1480 GeV and 1470 GeV for the electron and muon channel, respectively.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".