Measurement of the cross section for<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>W</mml:mi></mml:math>-boson production in association with jets in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>p</mml:mi><mml:mover accent="true"><mml:mi>p</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:math>collisions at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>1.96</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>TeV</mml:mi></mml:math>
Bibliographic record
Abstract
We present a measurement of the cross section for $W$-boson production in association with jets in $p\overline{p}$ collisions at $\sqrt{s}=1.96\text{ }\text{ }\mathrm{TeV}$. The analysis uses a data sample corresponding to an integrated luminosity of $320\text{ }\text{ }{\mathrm{pb}}^{\ensuremath{-}1}$ collected with the CDF II detector. $W$ bosons are identified in their electron decay channel and jets are reconstructed using a cone algorithm. For each $W+\ensuremath{\ge}n\mathrm{\text{\ensuremath{-}}}\mathrm{\text{jet}}$ sample ($n=1\ensuremath{-}4$) we measure the differential cross section $d\ensuremath{\sigma}(p\overline{p}\ensuremath{\rightarrow}W+\ensuremath{\ge}n\mathrm{\text{\ensuremath{-}}}\mathrm{\text{jet}})/d{E}_{T}^{\mathrm{nth}\mathrm{\text{\ensuremath{-}}}\mathrm{jet}}\ifmmode\times\else\texttimes\fi{}\mathcal{B}(W\ensuremath{\rightarrow}e\ensuremath{\nu})$ with respect to the transverse energy ${E}_{T}$ of the $n$th-highest ${E}_{T}$ jet above 20 GeV, and the total cross section $\ensuremath{\sigma}(p\overline{p}\ensuremath{\rightarrow}W+\ensuremath{\ge}n\mathrm{\text{\ensuremath{-}}}\mathrm{\text{jet}};{E}_{T}^{\mathrm{nth}\mathrm{\text{\ensuremath{-}}}\mathrm{jet}}>25\text{ }\text{ }\mathrm{GeV})\ifmmode\times\else\texttimes\fi{}\mathcal{B}(W\ensuremath{\rightarrow}e\ensuremath{\nu})$, for a restricted $W\ensuremath{\rightarrow}e\ensuremath{\nu}$ decay phase space. The cross sections, corrected for all detector effects, can be directly compared to particle level $W+\mathrm{\text{jet}}(\mathrm{s})$ predictions. We present here comparisons to leading order and next-to-leading order predictions.
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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 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.002 | 0.002 |
| Insufficient payload (model declined to judge) | 0.027 | 0.007 |
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".