{"id":"W4415458284","doi":"10.1007/jhep10(2025)113","title":"Improved measurement of η/η′ mixing in $$ {B}_{(s)}^0\\to J/\\psi {\\eta}^{\\left(\\prime \\right)} $$ decays","year":2025,"lang":"en","type":"article","venue":"Journal of High Energy Physics","topic":"Particle physics theoretical and experimental studies","field":"Physics and Astronomy","cited_by":1,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Victoria","funders":"Nuclear Physics; Institut de Ciències del Cosmos; Fundamental Research Funds for the Central Universities; Agencia Estatal de Investigación; Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung; Science and Technology Facilities Council; Australian Research Data Commons; UK Research and Innovation; Sorbonne Université; Ministerul Cercetării, Inovării şi Digitalizării; CAS Center for Excellence in Particle Physics; Max Planck Institute for Nuclear Physics; CERN; Universidade de Santiago de Compostela; Deutsches Elektronen-Synchrotron; Région Auvergne-Rhône-Alpes; RWTH Aachen University; Max-Planck-Gesellschaft; Centre National de la Recherche Scientifique; Universitat de Barcelona; Université de Fribourg; National Academy of Sciences of Ukraine; U.S. Department of Energy; Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro; Ministerstwo Edukacji i Nauki; University College Dublin; Conselho Nacional de Desenvolvimento Científico e Tecnológico; Generalitat Valenciana; Deutsche Forschungsgemeinschaft; Nederlandse Organisatie voor Wetenschappelijk Onderzoek; Universität Zürich; Bundesministerium für Bildung und Forschung; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior; National Science Council; Universitat Ramon Llull; National Natural Science Foundation of China; Agence Nationale de la Recherche; Universität Heidelberg; University of Bristol; Institut National de Physique Nucléaire et de Physique des Particules; Vrije Universiteit Amsterdam; University of Warwick; Rheinische Friedrich-Wilhelms-Universität Bonn; Université Paris Diderot; H2020 Marie Skłodowska-Curie Actions; De La Salle University; Institute of High Energy Physics; European Commission; Leverhulme Trust; Institutul National de Cercetare-Dezvoltare pentru Fizica si Inginerie Nucleara 'Horia Hulubei'; Albert-Ludwigs-Universität Freiburg; Financiadora de Estudos e Projetos; École Polytechnique Fédérale de Lausanne; Technische Universität Dortmund; National Science Foundation","keywords":"Branching fraction; Branching (polymer chemistry); Glueball; Systematic error; Mixing (physics); Collision","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":[0.001004569,0.00066911,0.0003601754,0.001244446,0.0004213252,0.00124003,0.0009425562,0.001066198,0.01645987],"category_scores_gemma":[0.0007374415,0.0007079651,0.0003277358,0.0008989444,0.0004102171,0.0009633725,0.0009711263,0.001147525,0.003069322],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.001062971,"about_ca_system_score_gemma":0.0005708043,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.00297255,"about_ca_topic_score_gemma":0.007362058,"domain_scores_codex":[0.9993843,0.00009392868,0.00002041616,0.0002248792,0.0001549361,0.0001215794],"domain_scores_gemma":[0.9996551,0.00006602106,0.00005326675,0.00008714972,0.00008158066,0.00005679123],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.002428201,0.000235221,0.01249312,0.0002243168,0.000108155,0.0002817343,0.0002416067,0.003093355,0.9033344,0.01942829,0.00695834,0.0511733],"study_design_scores_gemma":[0.0001997803,0.0003428094,0.03996302,0.00007936321,0.00017816,0.0004250144,0.0001057548,0.0298973,0.8976666,0.003675796,0.02732919,0.0001372073],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.7707093,0.001245134,0.1075061,0.0008296864,0.00024738,0.0001374644,0.009779339,0.004165554,0.10538],"genre_scores_gemma":[0.9451967,0.0004636657,0.03889493,0.0002410778,0.00003730772,0.0000832677,0.002304241,0.0003874757,0.01239136],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.01645987,"threshold_uncertainty_score":0.05506366,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01009590210556253,"score_gpt":0.2437616873976785,"score_spread":0.2336657852921159,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). 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