Search for \\(W′→t\\overline {b}\\) in the lepton plus jets final state in proton–proton collisions at a centre-of-mass energy of \\(\\sqrt {s}\\)=8 TeV with the ATLAS detector
Bibliographic record
Abstract
A search for new charged massive gauge bosons, called W , is performed with the ATLAS detector at the LHC, in proton-proton collisions at a centre-of-mass energy of √ s = 8 TeV, using a dataset corresponding to an integrated luminosity of 20.3 fb -1 .This analysis searches for W bosons in the W → t b decay channel in final states with electrons or muons, using a multivariate method based on boosted decision trees.The search covers masses between 0.5 and 3.0 TeV, for right-handed or left-handed W bosons.No significant deviation from the Standard Model expectation is observed and limits are set on the W → t b cross-section times branching ratio and on the W -boson effective couplings as a function of the W -boson mass using the CL s procedure.For a left-handed (right-handed) W boson, masses below 1.70 (1.92) TeV are excluded at 95% confidence level.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.001 |
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".