Search for a new Z′ gauge boson via the pp → W±(*) → Z′μ±ν → μ±μ∓μ±ν process in pp collisions at √s=13 TeV with the ATLAS detector
Bibliographic record
Abstract
A search for a new \( Z' \) gauge boson predicted by \( L_\mu - L_\tau \) models, based on charged-current Drell–Yan production, \( p p \to W^{\pm(*)} \to Z' \mu^{\pm} \nu \to \mu^{\pm} \mu^{\mp} \mu^{\pm} \nu \), is presented. The data sample used corresponds to an integrated luminosity of 140 \, \text{fb}^{-1} of proton–proton collisions at \( \sqrt{s} = 13 \, \text{TeV} \) recorded by the ATLAS detector at the Large Hadron Collider. The search examines a final state of \( 3 \mu \) plus large missing transverse momentum. Upper limits are set on the \( Z' \) production cross section times branching ratio in the mass range of 5–81 GeV. After combining with the previous \( Z' \) search using the neutral-current Drell–Yan production with a \( 4 \mu \) final state, the most stringent exclusion limits to date are achieved in the parameter space of the \( Z' \) coupling strength and mass.
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How this classification was reachedexpand
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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".