<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi mathvariant="italic">Z</mml:mi></mml:math>boson production in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>p</mml:mi><mml:mo>+</mml:mo><mml:mi>Pb</mml:mi></mml:mrow></mml:math>collisions at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msqrt><mml:msub><mml:mi>s</mml:mi><mml:mi mathvariant="italic">NN</mml:mi></mml:msub></mml:msqrt><mml:mo>=</mml:mo><mml:mn>5.02</mml:mn></mml:mrow></mml:math>TeV measured with the ATLAS detector
Bibliographic record
Abstract
The ATLAS Collaboration measures the inclusive production of $Z$ bosons via their decays into electron and muon pairs in $p+\mathrm{Pb}$ collisions at $\sqrt{{s}_{\mathit{NN}}}=5.02\phantom{\rule{0.16em}{0ex}}\mathrm{TeV}$ at the Large Hadron Collider. The measurements are made using data corresponding to integrated luminosities of 29.4 and 28.1 ${\mathrm{nb}}^{\ensuremath{-}1}$ for $Z\ensuremath{\rightarrow}ee$ and $Z\ensuremath{\rightarrow}\ensuremath{\mu}\ensuremath{\mu}$, respectively. The results from the two channels are consistent and combined to obtain a cross section times the $Z\ensuremath{\rightarrow}\ensuremath{\ell}\ensuremath{\ell}$ branching ratio, integrated over the rapidity region $|{y}_{Z}^{*}|<3.5$, of $139.8\ifmmode\pm\else\textpm\fi{}4.8\phantom{\rule{0.28em}{0ex}}(\mathrm{statistical})\ifmmode\pm\else\textpm\fi{}6.2\phantom{\rule{0.28em}{0ex}}(\mathrm{systematic})\ifmmode\pm\else\textpm\fi{}3.8$ (luminosity) nb. Differential cross sections are presented as functions of the $Z$ boson rapidity and transverse momentum and compared with models based on parton distributions both with and without nuclear corrections. The centrality dependence of $Z$ boson production in $p+\mathrm{Pb}$ collisions is measured and analyzed within the framework of a standard Glauber model and the model's extension for fluctuations of the underlying nucleon-nucleon scattering cross section.
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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 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.003 | 0.005 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.004 | 0.003 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.002 | 0.002 |
| Insufficient payload (model declined to judge) | 0.206 | 0.104 |
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".