{"id":"W4411089308","doi":"10.1016/j.physletb.2025.139637","title":"Calculation of the axial-vector coupling constant g to two loops in covariant chiral perturbation theory","year":2025,"lang":"en","type":"article","venue":"Physics Letters B","topic":"Quantum Chromodynamics and Particle Interactions","field":"Physics and Astronomy","cited_by":0,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"European Research Council; Horizon 2020 Framework Programme; Deutsche Forschungsgemeinschaft; Ministerium für Innovation, Wissenschaft und Forschung des Landes Nordrhein-Westfalen; Shota Rustaveli National Science Foundation; Ministerium für Kultur und Wissenschaft des Landes Nordrhein-Westfalen; Horizon 2020; Canadian Anesthesiologists' Society","keywords":"Physics; Covariant transformation; Coupling constant; Chiral perturbation theory; Pseudovector; Perturbation theory (quantum mechanics); Quantum electrodynamics; Mathematical physics; Perturbation (astronomy); Quantum mechanics; Classical mechanics; Quantum chromodynamics","routes":{"ca_aff":false,"ca_fund":true,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":true},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.001049945,0.001314991,0.0012475,0.002276719,0.001216297,0.0009601004,0.002185149,0.001194909,0.002439484],"category_scores_gemma":[0.00323277,0.000462498,0.0008785215,0.001575513,0.001542991,0.0007929773,0.001121905,0.001465823,0.00043324],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.002104075,"about_ca_system_score_gemma":0.002054572,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.007885849,"about_ca_topic_score_gemma":0.006364074,"domain_scores_codex":[0.9992767,0.0001822538,0.00002008764,0.00003373242,0.0003634436,0.0001237704],"domain_scores_gemma":[0.9984274,0.0005374156,0.0001783399,0.0002250791,0.0003552962,0.0002765069],"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":[0.0004567802,0.0003530295,0.003051628,0.0003380314,0.0001809973,0.002021801,0.0004815505,0.405574,0.02832161,0.5325454,0.001539645,0.02513545],"study_design_scores_gemma":[0.00009876649,0.00008351323,0.00136444,0.0000233103,0.00005520393,0.0001576184,0.0000493868,0.9283317,0.007952509,0.06074664,0.001062933,0.00007400083],"study_design_candidate":"theoretical_or_conceptual","study_design_consensus":"theoretical_or_conceptual","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.747035,0.0004777814,0.2063804,0.0008064703,0.0003273672,0.0001630881,0.0001943142,0.003645766,0.04096985],"genre_scores_gemma":[0.947518,0.0002929131,0.04171785,0.0002457158,0.00007662279,0.0001239039,0.0001237137,0.0004091856,0.009492069],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.007885849,"threshold_uncertainty_score":0.0156799,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.007951425801681972,"score_gpt":0.2646426644884913,"score_spread":0.2566912386868094,"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."}}