Towards Exotic Hidden-Charm Pentaquarks in QCD
Why this work is in the frame
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Bibliographic record
Abstract
Inspired by ${P}_{c}(4380)$ and ${P}_{c}(4450)$ recently observed by LHCb, a QCD sum rule investigation is performed, by which they can be identified as exotic hidden-charm pentaquarks composed of an anticharmed meson and a charmed baryon. Our results suggest that ${P}_{c}(4380)$ and ${P}_{c}(4450)$ have quantum numbers ${J}^{P}=3/{2}^{\ensuremath{-}}$ and $5/{2}^{+}$, respectively. Furthermore, two extra hidden-charm pentaqurks with configurations $\overline{D}{\mathrm{\ensuremath{\Sigma}}}_{c}^{*}$ and ${\overline{D}}^{*}{\mathrm{\ensuremath{\Sigma}}}_{c}^{*}$ are predicted, which have spin-parity quantum numbers ${J}^{P}=3/{2}^{\ensuremath{-}}$ and ${J}^{P}=5/{2}^{+}$, respectively. As an important extension, the mass predictions of hidden-bottom pentaquarks are also given. Searches for these partners of ${P}_{c}(4380)$ and ${P}_{c}(4450)$ are especially accessible at future experiments like LHCb and BelleII.
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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 | 0.000 |
| 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 | 0.001 |
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