Measurement of B<sup>0</sup>âD<inf>s</inf><sup>(*)+</sup>D*<sup>-</sup>branching fractions and B<sup>0</sup>âD*<inf>s</inf><sup>+</sup>D*<sup>-</sup>polarization with a partial reconstruction technique
Bibliographic record
Abstract
We present a study of the decays B0âDs(*)+D*-, using 20.8 fb-1of e+e-annihilation data recorded with the BABAR detector. The analysis is conducted with a partial reconstniction technique, in which only the Ds(*)+and the soft pion from the D*-decay are reconstructed. We measure the branching fractions B(B0âDs+D*-) = (1.03±0.14±0.13±0.26)% and B(B0âD*s+D*-) = (1.97±0.15±0. 30±0.49)%, where the first error is statistical, the second is systematic, and the third is the error due to the Ds+â ÏÏ+branching fraction uncertainty. From the B0âD*s+D*-angular distributions, we measure the fraction of longitudinal polarization ÎL/Î = (51.9±5.0±2.8)%, which is consistent with theoretical predictions based on factorization. © 2003 The American Physical Society.
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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 | 0.017 | 0.014 |
| Meta-epidemiology (narrow) | 0.020 | 0.021 |
| Meta-epidemiology (broad) | 0.019 | 0.011 |
| Bibliometrics | 0.015 | 0.022 |
| Science and technology studies | 0.011 | 0.010 |
| Scholarly communication | 0.013 | 0.028 |
| Open science | 0.014 | 0.008 |
| Research integrity | 0.013 | 0.019 |
| Insufficient payload (model declined to judge) | 0.011 | 0.008 |
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".