Exotic decay of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Cs</mml:mi><mml:mprescripts/><mml:none/><mml:mn>115</mml:mn></mml:mmultiscripts></mml:math>
Bibliographic record
Abstract
The detailed study of the ${\ensuremath{\beta}}^{+}$/EC decay of the very neutron-deficient and alpha-unbound nucleus $^{115}\mathrm{Cs}$ is presented. The measurement was performed at the ISOLDE, CERN where delayed charged particles and $\ensuremath{\gamma}$ rays were detected. The observed delayed $\ensuremath{\gamma}$ rays are in agreement with the previously reported characteristics $\ensuremath{\gamma}$ rays of $^{115}\mathrm{Xe}$. Based on the experimental observations, the tentative ground-state spin of $^{115}\mathrm{Cs}$ is suggested to be $7/{2}^{+}$ or ${9/2}^{+}$. Furthermore, the measured decay branching ratio of delayed protons exceeds the previously reported value. Additionally, new delayed $\ensuremath{\alpha}$-branching ratio and several reconstructed proton and $\ensuremath{\alpha}$-unbound excited states of $^{115}\mathrm{Xe}$ are being reported for the first time. The properties of proton-unbound states at excitation energies from 3.9--7.9 MeV have been obtained by fitting the delayed proton spectrum via the Bayesian method. The measured lifetimes of these proton-unbound states are in the order of zeptoseconds.
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How this classification was reachedexpand
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 | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.002 |
| Meta-epidemiology (broad) | 0.001 | 0.003 |
| Bibliometrics | 0.000 | 0.002 |
| Science and technology studies | 0.001 | 0.002 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.002 | 0.003 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.004 | 0.010 |
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; both teacher heads agree on what is shown here.
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".