COUPLED-CHANNEL CALCULATION OF BOUND AND RESONANT SPECTRA OF $^9_\Lambda{\rm Be}$ AND $^{13}_\Lambda\rm C$ HYPERNUCLEI
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Bibliographic record
Abstract
A multi-channel algebraic scattering (MCAS) approach has been used to analyze the spectra of two hypernuclear systems, [Formula: see text] and [Formula: see text]. The splitting of the two odd-parity excited levels ([Formula: see text] and [Formula: see text]) at 11 MeV excitation in [Formula: see text] is driven mainly by the weak Λ-nucleus spin–orbit force, but the splittings of the [Formula: see text] and [Formula: see text] levels in both [Formula: see text] and [Formula: see text] have a different origin. These cases appear to be dominated by coupling to the collective 2 + states of the core nuclei. Using simple phenomenological potentials as input to the MCAS method, the observed splitting and level ordering in [Formula: see text] is reproduced with the addition of a weak spin–spin interaction acting between the hyperon and the spin of the excited target. With no such spin–spin interaction, the level ordering in [Formula: see text] is inverted with respect to that currently observed. In both hypernuclei, our calculations suggest that there are additional low-lying resonant states in the Λ-nucleus continua.
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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.
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| 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 | 0.000 |
| 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 |
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Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
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