ENTROPY SCALING IN ION–ION COLLISIONS AT AGS AND SPS ENERGIES
Bibliographic record
Abstract
Analysis of the experimental data on nucleus–nucleus collisions at AGS and SPS energies reveals that entropy produced in a limited and full phase-space increases with increasing beam energy and mass of the colliding nuclei. The analysis of the data and corresponding mixed event samples, carried out by considering the particles emitted in the forward and backward hemispheres separately, indicates the presence of clusterization and correlations amongst the produced particles. It is also observed that the total entropy produced in a limited pseudorapidity bin, when normalized to the maximum rapidity in the center of mass frame, is essentially independent of projectile and target masses as well as beam energy, indicating thereby presence of a kind of entropy scaling. The observed scaling is also nicely reproduced by the Monte Carlo models, AMPT and FRITIOF. Furthermore, results of the analysis of the mixed events reveal that the observed entropy scaling is a distinguishable feature of the data rather than a manifestation of the statistics.
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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 | 0.005 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
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".