Tests of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>C</mml:mi><mml:mi>P</mml:mi><mml:mi>T</mml:mi></mml:math>symmetry in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup><mml:mtext>−</mml:mtext><mml:msup><mml:mrow><mml:mover accent="true"><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mo stretchy="false">¯</mml:mo></mml:mrow></mml:mover></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>mixing and in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>B</mml:mi><mml:mn>0</mml:mn></mml:msup><mml:mo stretchy="false">→</mml:mo><mml:mi>c</mml:mi><mml:mover accent="true"><mml:mi>c</mml:mi><mml:mo stretchy="false">¯</mml:mo></mml:mover><mml:msup><mml:mi>K</mml:mi><mml:mn>0</mml:mn></mml:msup></mml:math>decays
Bibliographic record
Abstract
Using the eight time dependences ${\mathrm{e}}^{\ensuremath{-}\mathrm{\ensuremath{\Gamma}}t}(1+{C}_{i}\mathrm{cos}\mathrm{\ensuremath{\Delta}}mt+{S}_{i}\mathrm{sin}\mathrm{\ensuremath{\Delta}}mt)$ for the decays $\mathrm{\ensuremath{\Upsilon}}(4S)\ensuremath{\rightarrow}{B}^{0}{\overline{B}}^{0}\ensuremath{\rightarrow}{f}_{j}{f}_{k}$, with the decay into a flavor-specific state ${f}_{j}={\ensuremath{\ell}}^{\ifmmode\pm\else\textpm\fi{}}X$ before or after the decay into a $CP$ eigenstate ${f}_{k}=c\overline{c}{K}_{S,L}$, as measured by the BABAR experiment, we determine the three $CPT$-sensitive parameters $\mathrm{Re}(\mathsf{z})$ and $\mathrm{Im}(\mathsf{z})$ in ${B}^{0}\text{\ensuremath{-}}{\overline{B}}^{0}$ mixing and $|\overline{A}/A|$ in ${B}^{0}\ensuremath{\rightarrow}c\overline{c}{K}^{0}$ decays. We find $\mathrm{Im}(\mathsf{z})=0.010\ifmmode\pm\else\textpm\fi{}0.030\ifmmode\pm\else\textpm\fi{}0.013$, $\mathrm{Re}(\mathsf{z})=\ensuremath{-}0.065\ifmmode\pm\else\textpm\fi{}0.028\ifmmode\pm\else\textpm\fi{}0.014$, and $|\overline{A}/A|=0.999\ifmmode\pm\else\textpm\fi{}0.023\ifmmode\pm\else\textpm\fi{}0.017$, in agreement with $CPT$ symmetry.
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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 | 0.004 | 0.050 |
| Meta-epidemiology (narrow) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.002 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.002 | 0.002 |
| Scholarly communication | 0.005 | 0.008 |
| Open science | 0.004 | 0.004 |
| Research integrity | 0.003 | 0.003 |
| Insufficient payload (model declined to judge) | 0.200 | 0.106 |
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".