Jet Fragmentation in p+Pb Collisions
Bibliographic record
Abstract
A measurement of jet fragmentation functions into charged particles in $\\\\sqrt{s_{\\\\mathrm{NN}}}$=5.02TeV p+Pb collisions and pp collisions at $\\\\sqrt{s}$=2.76 TeV is presented. The analysis utilizes 28 nb$^{-1}$ of p+Pb data and 4.0 pb$^{-1}$ of pp data both collected in 2013 by the ATLAS detector at the LHC. The measurement is reported in the center of mass frame in the range $|y^*|<$1.6 as a function of the charged-particle longitudinal momentum fraction and for jets with transverse momentum 45 $ < p_{T} <$ 260 GeV and charged particles with $p_{T}>3.5$ GeV. The $\\\\sqrt{s}$=2.76 TeV pp fragmentation functions were extrapolated to $\\\\sqrt{s}$=5.02 TeV in order to provide a comparison for the p+Pb fragmentation functions. Differences are observed between the fragmentation functions measured in pPb collisions and the extrapolated pp fragmentation functions at high-$z$ which are not statistical in nature.
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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 | 0.001 | 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 | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.004 | 0.004 |
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; both teacher heads agree on what is shown here.
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".