Measurement of W± and Z-boson production cross sections in pp collisions at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>13</mml:mn><mml:mtext> TeV</mml:mtext></mml:math> with the ATLAS detector
Why this work is in the frame
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Bibliographic record
Abstract
Measurements of the W ± → ℓ ± ν and Z → ℓ + ℓ − production cross sections (where ℓ ± = e ± , μ ± ) in proton–proton collisions at s = 13 TeV are presented using data recorded by the ATLAS experiment at the Large Hadron Collider, corresponding to a total integrated luminosity of 81 pb −1 . The total inclusive W ± -boson production cross sections times the single-lepton-flavour branching ratios are σ W + tot = 11.83 ± 0.02 (stat) ± 0.32 (sys) ± 0.25 (lumi) nb and σ W − tot = 8.79 ± 0.02 (stat) ± 0.24 (sys) ± 0.18 (lumi) nb for W + and W − , respectively. The total inclusive Z -boson production cross section times leptonic branching ratio, within the invariant mass window 66 < m ℓ ℓ < 116 GeV , is σ Z tot = 1.981 ± 0.007 (stat) ± 0.038 (sys) ± 0.042 (lumi) nb . The W + , W − , and Z -boson production cross sections and cross-section ratios within a fiducial region defined by the detector acceptance are also measured. The cross-section ratios benefit from significant cancellation of experimental uncertainties, resulting in σ W + fid / σ W − fid = 1.295 ± 0.003 (stat) ± 0.010 (sys) and σ W ± fid / σ Z fid = 10.31 ± 0.04 (stat) ± 0.20 (sys) . Theoretical predictions, based on calculations accurate to next-to-next-to-leading order for quantum chromodynamics and to next-to-leading order for electroweak processes and which employ different parton distribution function sets, are compared to these measurements.
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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) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.002 | 0.002 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 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 it