{"id":"W208687781","doi":"10.1103/physrevlett.112.120407","title":"Hyperfine Splitting in Positronium to<mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><mml:mrow><mml:mi mathvariant=\"script\">O</mml:mi><mml:mo stretchy=\"false\">(</mml:mo><mml:msup><mml:mrow><mml:mi>α</mml:mi></mml:mrow><mml:mrow><mml:mn>7</mml:mn></mml:mrow></mml:msup><mml:msub><mml:mrow><mml:mi>m</mml:mi></mml:mrow><mml:mrow><mml:mi>e</mml:mi></mml:mrow></mml:msub><mml:mo stretchy=\"false\">)</mml:mo></mml:mrow></mml:math>: One Photon Annihilation Contribution","year":2014,"lang":"lv","type":"article","venue":"Physical Review Letters","topic":"Muon and positron interactions and applications","field":"Engineering","cited_by":36,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Alberta","funders":"","keywords":"Positronium; Annihilation; Hyperfine structure; Physics; Ground state; Atomic physics; Energy (signal processing); Particle physics; Quantum mechanics; Positron; Electron","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0009192243,0.001321031,0.0009059583,0.00228075,0.001850482,0.001621735,0.001830213,0.001091066,0.06756391],"category_scores_gemma":[0.001688103,0.0006688945,0.001143305,0.00159698,0.001089172,0.001952896,0.002053042,0.002348706,0.005897475],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.001672455,"about_ca_system_score_gemma":0.001081073,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.003254676,"about_ca_topic_score_gemma":0.006254099,"domain_scores_codex":[0.9991411,0.0001535639,0.00002575857,0.0001439324,0.0002396769,0.0002960385],"domain_scores_gemma":[0.9993278,0.0002279483,0.00006617851,0.0001682166,0.000122109,0.00008770907],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"theoretical_or_conceptual","study_design_gemma":"theoretical_or_conceptual","study_design_scores_codex":[0.0003738846,0.0001886772,0.003050473,0.0009310083,0.0001185786,0.001741294,0.000979672,0.006930599,0.03308683,0.8666552,0.04692734,0.03901652],"study_design_scores_gemma":[0.0003166782,0.0001895664,0.01487251,0.0006846269,0.0002633787,0.002212411,0.0009107533,0.09973031,0.1748554,0.6172659,0.08832288,0.000375548],"study_design_candidate":"theoretical_or_conceptual","study_design_consensus":"theoretical_or_conceptual","genre_codex":"other","genre_gemma":"empirical","genre_scores_codex":[0.2343539,0.002408927,0.1979265,0.004850958,0.002654145,0.000256239,0.003646272,0.006234102,0.5476691],"genre_scores_gemma":[0.8143538,0.001472449,0.02371399,0.001570434,0.0002118797,0.0002701676,0.003363933,0.004351823,0.1506915],"genre_candidate":"empirical","genre_consensus":null,"teacher_disagreement_score":0.06756391,"threshold_uncertainty_score":0.2260239,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01443423234819935,"score_gpt":0.2454561995054851,"score_spread":0.2310219671572858,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}