Determining the relative sign of the Higgs boson couplings to $W$ and $Z$ bosons using VBF $WH$ production with the ATLAS detector
Bibliographic record
Abstract
Associated production of Higgs and $𝑊$ bosons via vector boson fusion (VBF) offers sensitivity to the relative sign of the Higgs boson couplings to $𝑊$ and $𝑍$ bosons. In this letter, two searches for this process are presented, using 140 fb$^{−1}$ of proton-proton collision data at $\\sqrt{𝑠} = 13$ TeV recorded by the ATLAS detector at the LHC. The first search targets the scenario with opposite-sign couplings of the $𝑊$ and $𝑍$ bosons to the Higgs boson, while the second targets the Standard Model-like scenario with same-sign couplings. Both analyses consider Higgs decays to $𝑏$-quarks and $𝑊$ decays with an electron or muon. The opposite-sign coupling hypothesis is excluded with significance greater than 8𝜎, and a limit is set on the cross section for VBF $𝑊 𝐻$ production of 11.2 times the Standard Model value, compared to an expected limit of 9.4.
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| 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 | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".