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Evidence for an excess of B → <i>D</i><sup>(*)</sup><i>τν</i> decays

2013· article· en· W2047902477 on OpenAlex
R. Kowalewski

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.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueJournal of Physics Conference Series · 2013
Typearticle
Languageen
FieldPhysics and Astronomy
TopicParticle physics theoretical and experimental studies
Canadian institutionsUniversity of Victoria
Fundersnot available
KeywordsPhysicsHiggs bosonMuonParticle physicsBranching fractionStandard Model (mathematical formulation)BosonNuclear physicsCharged particlePhysics beyond the Standard ModelIonQuantum mechanics

Abstract

fetched live from OpenAlex

The full data sample from the BaBar experiment is used to measure the ratios of branching fractions and , where ℓ refers to an electron or muon. These ratios are sensitive to the presence of new physics in charged current decays and are sensitive probes for charged Higgs bosons. These ratios are predicted in the standard model with small theoretical uncertainties, and many experimental uncertainties cancel in the ratio. The measured values, R(D) = 0.440 ± 0.058 ± 0.042 and R(D*) = 0.332 ± 0.024 ± 0.018, exceed standard model expectations by 2.0σ and 2.7σ, respectively. Accounting for correlations, the combined departure from the standard model is 3.4σ. The measured values are not compatible with a charged Higgs boson in type-II two-Higgs-doublet models, but can be accommodated in more general models involving charged mediators.

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 imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Theoretical or conceptual · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.452
Threshold uncertainty score0.597

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.002
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

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.

Opus teacher head0.066
GPT teacher head0.315
Teacher spread0.249 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it