Measurement of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mrow><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>Production in the Nuclear Medium by<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>Interactions at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>0.408</mml:mn><mml:mi/><mml:mi>GeV</mml:mi><mml:mi>/</mml:mi><mml:mi mathvariant="italic">c</mml:mi></mml:math>
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
We report on an investigation of the $({\ensuremath{\pi}}^{\ensuremath{-}},{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0})$ reaction by means of measurements of the ${\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ invariant mass distributions from ${\ensuremath{\pi}}^{\ensuremath{-}}$ interactions on H, D, C, Al, and Cu targets at ${p}_{{\ensuremath{\pi}}^{\ensuremath{-}}}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0.408\mathrm{GeV}/c$. The sharp, strong peak in the ${\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ invariant mass near ${2m}_{\ensuremath{\pi}}$ reported by the CHAOS Collaboration is not seen in our ${\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ data. However, we do observe a change in the shape of the ${\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ invariant mass spectrum for the different targets, indicating that the ${\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ interaction diminishes in the nuclear medium as represented by nuclei D, C, Al, and Cu, compared to hydrogen.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.008 | 0.007 |
| Meta-epidemiology (narrow) | 0.005 | 0.009 |
| Meta-epidemiology (broad) | 0.002 | 0.011 |
| Bibliometrics | 0.003 | 0.006 |
| Science and technology studies | 0.007 | 0.008 |
| Scholarly communication | 0.007 | 0.008 |
| Open science | 0.011 | 0.009 |
| Research integrity | 0.008 | 0.009 |
| Insufficient payload (model declined to judge) | 0.758 | 0.013 |
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 it