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Bibliographic record
Abstract
We study the $\mathrm{\ensuremath{\Upsilon}}(1S)$ radiative decays to $\ensuremath{\gamma}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ and $\ensuremath{\gamma}{K}^{+}{K}^{\ensuremath{-}}$ using data recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider at center-of-mass energies at the $\mathrm{\ensuremath{\Upsilon}}(2S)$ and $\mathrm{\ensuremath{\Upsilon}}(3S)$ resonances. The $\mathrm{\ensuremath{\Upsilon}}(1S)$ resonance is reconstructed from the decay $\mathrm{\ensuremath{\Upsilon}}(nS)\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}\mathrm{\ensuremath{\Upsilon}}(1S)$, $n=2$, 3. Branching fraction measurements and spin-parity analyses of $\mathrm{\ensuremath{\Upsilon}}(1S)$ radiative decays are reported for the $\mathrm{I}=0$ $S$-wave and ${f}_{2}(1270)$ resonances in the ${\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ mass spectrum, the ${f}_{2}^{\ensuremath{'}}(1525)$ and ${f}_{0}(1500)$ in the ${K}^{+}{K}^{\ensuremath{-}}$ mass spectrum, and the ${f}_{0}(1710)$ in both.
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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 | 0.002 | 0.004 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.002 | 0.003 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.004 | 0.005 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.133 | 0.053 |
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".