Measurement of sigma(0)(Lambda B)/sigma(0) x B(Lambda(0)(b)->Lambda(+)(c)pi(-))/B(B)over-bar(0)-> D+pi(-)) in p(p)over-bar collisions at root s=1.96 TeV
Bibliographic record
Abstract
We present the first observation of the baryon decay Lambda(0)(b)->Lambda(+)(c)pi(-) followed by Lambda(+)(c)-> pK(-)pi(+) in 106 pb(-1) p (p) over bar collisions at root s=1.96 TeV in the CDF experiment. In order to reduce systematic error, the measured rate for Lambda(0)(b) decay is normalized to the kinematically similar meson decay (B) over bar (0)-> D+pi(-) followed by D+->pi K-+(-)pi(+). We report the ratio of production cross sections (sigma) times the ratio of branching fractions (B) for the momentum region integrated above p(T)> 6 GeV/c and pseudorapidity range |eta|< 1.3: sigma(p (p) over bar ->Lambda X-0(b))/sigma(p (p) over bar ->(B) over bar X-0)xB(Lambda(0)(b)->Lambda(+)(c)pi(-))/B((B) over bar (0)-> D+pi(-))=0.82 +/- 0.08(stat)+/- 0.11(syst)+/- 0.22[B(Lambda(+)(c)-> pK(-)pi(+))].
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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 | 0.003 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 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 teacher head, 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".