Search for the deeply bound K-pp state from the semi-inclusive forward-neutron spectrum in the in-flight K- reaction on helium-3
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
An experiment to search for the |$K^{-}pp$| bound state was performed via the in-flight |${}^3{\rm He}(K^{-},n)$| reaction using |$5.3 \times 10^9$| kaons at 1 GeV/|$c$| at the J-PARC hadron experimental facility. In the semi-inclusive neutron missing-mass spectrum at |$\theta _{n}^{lab}=0^\circ$|, no significant peak was observed in the region corresponding to |$K^{-}pp$| binding energy larger than 80 MeV, where a bump structure has been reported in the |$\Lambda p$| final state in different reactions. Assuming the state to be isotropically decaying into |$\Lambda p$|, mass-dependent upper limits on the production cross section were determined to be 30–180, 70–250, and 100–270|$\mu$|b/sr, for the natural widths of 20, 60, and 100 MeV, respectively, at 95% confidence level.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.002 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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