First search for neutrinoless double beta decay in 94,96Zr isotopes using Cs2ZrCl6 crystal scintillators
Bibliographic record
Abstract
An experiment to study double-beta decay (DBD) processes in 94,96Zr using two Cs2ZrCl6 (CZC) crystal scintillators (11 g and 24 g) has been performed deep underground in the DAMA/CRYS setup at LNGS. These crystals have been studied in terms of chemical purity and internal radioactive contamination, scintillation and PSD performances. Their high radiopurity was confirmed by low-background measurements over 456.5 d which resulted in a counting rate of 0.17 (kg·keV·y) −1 at the Q2β value of 96Zr. Limits on different DBD modes of 94,96Zr were set at the level T1/2 ~ 1017 − 1020 y (90% C.L.).
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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 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".