Measurement of the production cross section of an isolated photon associated with jets in proton-proton collisions at √s = 7 TeV with the ATLAS detector
Bibliographic record
Abstract
A measurement of the cross section for the production of an isolated photon in association with jets in proton-proton collisions at a center-of-mass energy √s=7 TeV is presented. Photons are reconstructed in the pseudorapidity range |η𝛾| <1.37 and with a transverse energy 𝐸𝛾 T >25 GeV. Jets are reconstructed in the rapidity range |𝑦jet| <4.4 and with a transverse momentum 𝑝jet T >20 GeV. The differential cross section 𝑑σ/𝑑𝐸𝛾 T is measured, as a function of the photon transverse energy, for three different rapidity ranges of the leading-𝑝T jet: |𝑦jet| <1.2, 1.2 ≤|𝑦jet| <2.8 and 2.8 ≤|𝑦jet| <4.4. For each rapidity configuration the same-sign (η𝛾𝑦jet ≥0) and opposite-sign (η𝛾𝑦jet <0) cases are studied separately. The results are based on an integrated luminosity of 37 pb−1, collected with the ATLAS detector at the LHC. Next-to-leading order perturbative QCD calculations are found to be in fair agreement with the data, except for 𝐸𝛾 T ≲45 GeV, where the theoretical predictions overestimate the measured cross sections.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 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".