Alberta THy 07-03 Study of Λ + c, Σc, Ξc and Λb hypernuclei in the quark-meson coupling model
Bibliographic record
Abstract
Charmed and bottom hypernuclei with the low-lying heavy baryons, i.e., Λ + c,Σc,Ξc and Λb hypernuclei, are studied systematically using the quark-meson coupling (QMC) model, which has been able to describe successfully the properties of nuclear matter, finite nuclei and strange hypernuclei. Effects of both the Pauli blocking originating from the underlying quark structure of baryons, and the Σc,bN − Λc,bN channel coupling are taken into account at the hadronic level in the same ways as those included for the Λ,Σ and Ξ hypernuclei. It is shown that, although the total baryon density distributions and the scalar and vector potentials for these baryons are very similar to those for the hyperons with the same light quark numbers in the corresponding strange hypernuclei, the single-particle energies and the wave functions for them (e.g., for the 1s 1/2 state), are very different. Our results suggest that the Σ ++ c and Ξ + c hypernuclei are very unlikely to be formed, while the Λ + c, Ξ0c and Λb hypernuclei are quite likely. For the Σ0 c and Σ+ c hypernuclei, the formation probability is non-zero though small. PACS: 24.85.+p, 14.20.Lq, 14.20.Mr, 21.80.+a, 21.65.+f Keywords: Charmed and bottom hypernuclei, Single-particle energy levels, Heavy baryons in nuclear medium, Quark-meson coupling model
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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 | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.006 | 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 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".