Precise mass measurements of A = 133 isobars with the Canadian Penning Trap: Resolving the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.svg"><mml:msub><mml:mrow><mml:mi>Q</mml:mi></mml:mrow><mml:mrow><mml:msup><mml:mrow><mml:mi>β</mml:mi></mml:mrow><mml:mrow><mml:mo linebreak="badbreak" linebreakstyle="after">−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:msub></mml:math> anomaly at 133Te
Bibliographic record
Abstract
We report precision mass measurements of 133 Sb, 133 g , m Te, and 133 g , m I, produced at CARIBU at Argonne National Laboratory's ATLAS facility and measured using the Canadian Penning Trap mass spectrometer . These masses clarify an anomaly in the 133 Te β -decay. The masses reported in the 2020 Atomic Mass Evaluation (M. Wang et al., 2021) produce Q β − ( 133 Te)=2920(6) keV; however, the highest-lying 133 I level populated in this decay is observed at E i = 2935.83 ( 15 ) keV, resulting in an anomalous Q β − i = − 16 ( 6 ) keV. Our new measurements give Q β − ( Te 133 ) = 2934.8 ( 11 ) keV, a factor of five more precise, yielding Q β i = − 1.0 ( 12 ) keV, a 3 σ shift from the previous results. This resolves this anomaly, but indicates further anomalies in our understanding of the structure of this isotope.
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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 | 0.003 | 0.001 |
| Meta-epidemiology (narrow) | 0.002 | 0.003 |
| Meta-epidemiology (broad) | 0.001 | 0.004 |
| Bibliometrics | 0.001 | 0.003 |
| Science and technology studies | 0.004 | 0.004 |
| Scholarly communication | 0.004 | 0.003 |
| Open science | 0.005 | 0.004 |
| Research integrity | 0.002 | 0.004 |
| Insufficient payload (model declined to judge) | 0.518 | 0.003 |
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".