Measurement of the inclusive cross section of p°, fâ(980) and fâ(1270) mesons in deep inelastic scattering at HERA
Bibliographic record
Abstract
The production of neutral meson resonances in deep inelastic scattering has been studied in DESY with the ZEUS detector at the HERA collider. The rho 0, f0(980) and f2(1270) total cross sections, as well as differential pT and eta cross sections, were measured in the 0 GeV < pT < 7 GeV and |eta| < 1 ranges. The obtained total cross sections were sr0 = 19.21 +/- 0.92 (stat.) +/- 7.59 (syst.) nb, sf0 = 0.63 +/- 0.04 (stat.) +/- 0.25 (syst.) nb and sf2 = 3.62 +/- 0.02 (stat.) +/- 1.73 (syst.) nb. The cross sections measurements for f0 and f2 mesons are underestimated since acceptances had to be overestimated. The measurements were performed on a data sample with 82.5 nb-1 of integrated luminosity and for a squared momentum transfer greater than 3 GeV2 .
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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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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 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".