MétaCan
Menu
← Back to cohort
Record W132440564 · doi:10.2172/839873

Evidence for the Decay B+- to K*+- pi0

2005· report· en· W132440564 on OpenAlexfundno aff
B. Aubert

Bibliographic record

Venuenot available
Typereport
Languageen
FieldPhysics and Astronomy
TopicParticle physics theoretical and experimental studies
Canadian institutionsnot available
FundersInstitut National de Physique Nucléaire et de Physique des ParticulesInstitute of High Energy PhysicsNatural Sciences and Engineering Research Council of CanadaCentre National de la Recherche ScientifiqueBundesministerium für Bildung und ForschungSLAC National Accelerator LaboratoryAlexander von Humboldt-StiftungAlfred P. Sloan FoundationDeutsche ForschungsgemeinschaftU.S. Department of EnergyNational Science Foundation
KeywordsPhysicsB-factoryBranching fractionPiYield (engineering)Electron–positron annihilationAsymmetryNuclear physicsParticle physicsBranching (polymer chemistry)Particle decayAnalytical Chemistry (journal)Elementary particleHadronChemistry

Abstract

fetched live from OpenAlex

We have measured the process B{sup {+-}} {yields} (K*{sup {+-}}{pi}{sup 0}){pi}{sup 0} with 232 million {Upsilon}(4S) {yields} B{bar B} decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. From a signal yield of 89 {+-} 26 events we obtain the branching fraction {Beta}(B{sup {+-}} {yields} K*{sup {+-}}{pi}{sup 0}) = [6.9 {+-} 2.0(stat) {+-} 1.3(syst)] x 10{sup -6} with a statistical significance of 3.6 standard deviations including systematic uncertainties, and a charge asymmetry of 0.04 {+-} 0.29(stat) {+-} 0.05(syst).

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.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.001
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.007
Threshold uncertainty score0.022

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.001
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.001
Science and technology studies0.0010.001
Scholarly communication0.0010.000
Open science0.0010.001
Research integrity0.0010.000
Insufficient payload (model declined to judge)0.0070.002

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 head0.125
GPT teacher head0.401
Teacher spread0.276 · 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

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designBench or experimental
Domainnot available
GenreEmpirical

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".

Quick stats

Citations0
Published2005
Admission routes1
Has abstractyes

Explore more

Same topicParticle physics theoretical and experimental studies→French-language works237,207→