Search for <i>ZZ</i> and <i>Z</i>γ* Production in <i>pp</i> Collisions at √<i>s</i> = 1.96 TeV and Limits on Anomalous <i>ZZZ</i> and <i>ZZ</i>γ* Couplings
Why this work is in the frame
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Bibliographic record
Abstract
We present a study of μμμμ, eeee, and μμee events using 1 fb-1 of data collected with the D0 detector at the Fermilab Tevatron pp Collider at √s = 1.96 TeV. Requiring the lepton pair masses to be greater than 30 GeV, we observe one event, consistent with the expected background of 0.13 ± 0.03 events and with the predicted standard model ZZ and Zγ* production of 1.71 ± 0.15 events. We set an upper limit on the ZZ and Zγ* cross section of 4.4 pb at the 95% C.L. We also derive limits on anomalous neutral trilinear ZZZ and ZZγ* gauge couplings. The one-parameter 95% C.L. coupling limits with a form-factor scale Λ = 1.2 TeV are -0.28< ƒ40Z < 0.28, -0.31 < ƒ50z < 0.29, -0.26 < ƒ40γ < 0.26, and -0.30 < ƒ50γ < 0.28.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 it