Observation of the decay <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:msubsup><mml:mrow><mml:mi>Λ</mml:mi></mml:mrow><mml:mrow><mml:mi>b</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msubsup><mml:mo stretchy="false">→</mml:mo><mml:msubsup><mml:mrow><mml:mi>Λ</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msubsup><mml:mi>p</mml:mi><mml:mover accent="true"><mml:mrow><mml:mi>p</mml:mi></mml:mrow><mml:mo>‾</mml:mo></mml:mover><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:math>
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
The decay Λ b 0 → Λ c + p p ‾ π − is observed using pp collision data collected with the LHCb detector at centre-of-mass energies of s = 7 and 8 Tev, corresponding to an integrated luminosity of 3 fb − 1 . The ratio of branching fractions between Λ b 0 → Λ c + p p ‾ π − and Λ b 0 → Λ c + π − decays is measured to be B ( Λ b 0 → Λ c + p p ‾ π − ) B ( Λ b 0 → Λ c + π − ) = 0.0540 ± 0.0023 ± 0.0032 . Two resonant structures are observed in the Λ c + π − mass spectrum of the Λ b 0 → Λ c + p p ‾ π − decays, corresponding to the Σ c ( 2455 ) 0 and Σ c ⁎ ( 2520 ) 0 states. The ratios of branching fractions with respect to the decay Λ b 0 → Λ c + p p ‾ π − are B ( Λ b 0 → Σ c 0 p p ‾ ) × B ( Σ c 0 → Λ c + π − ) B ( Λ b 0 → Λ c + p p ‾ π − ) = 0.089 ± 0.015 ± 0.006 , B ( Λ b 0 → Σ c ⁎ 0 p p ‾ ) × B ( Σ c ⁎ 0 → Λ c + π − ) B ( Λ b 0 → Λ c + p p ‾ π − ) = 0.119 ± 0.020 ± 0.014 . In all of the above results, the first uncertainty is statistical and the second is systematic. The phase space is also examined for the presence of dibaryon resonances. No evidence for such resonances is found.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.008 | 0.007 |
| Meta-epidemiology (narrow) | 0.005 | 0.011 |
| Meta-epidemiology (broad) | 0.002 | 0.012 |
| Bibliometrics | 0.003 | 0.008 |
| Science and technology studies | 0.009 | 0.013 |
| Scholarly communication | 0.009 | 0.009 |
| Open science | 0.013 | 0.013 |
| Research integrity | 0.011 | 0.010 |
| Insufficient payload (model declined to judge) | 0.914 | 0.011 |
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