{"id":"W2149954779","doi":"10.1103/physrevlett.102.242001","title":"Observation of Exclusive Charmonium Production and<mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><mml:mi>γ</mml:mi><mml:mi>γ</mml:mi><mml:mo>→</mml:mo><mml:msup><mml:mi>μ</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:msup><mml:mi>μ</mml:mi><mml:mo>−</mml:mo></mml:msup></mml:math>in<mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><mml:mi>p</mml:mi><mml:mover accent=\"true\"><mml:mi>p</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:math>Collisions at<mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>1.96</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>TeV</mml:mi></mml:math>","year":2009,"lang":"lv","type":"article","venue":"Physical Review Letters","topic":"Particle physics theoretical and experimental studies","field":"Physics and Astronomy","cited_by":172,"is_retracted":false,"has_abstract":true,"ca_institutions":"McGill University; Institute of Particle Physics; Simon Fraser University; University of Alberta; University of Toronto; TRIUMF","funders":"Fermilab; Science and Technology Facilities Council; Istituto Nazionale di Fisica Nucleare; Centre National de la Recherche Scientifique; Bundesministerium für Bildung und Forschung; Ministerio de Ciencia e Innovación; Natural Sciences and Engineering Research Council of Canada; National Science Council; Alfred P. Sloan Foundation; U.S. Department of Energy; Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung; Russian Foundation for Basic Research; Ministry of Education, Culture, Sports, Science and Technology; National Science Foundation","keywords":"Physics; Production (economics); Muon; Hadron; Particle physics; Nuclear physics","routes":{"ca_aff":true,"ca_fund":true,"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":[0.0005179486,0.0006557132,0.0005084198,0.001166422,0.001284147,0.001198225,0.0009189611,0.001258274,0.03570258],"category_scores_gemma":[0.0006679428,0.0008659257,0.000713831,0.001462753,0.0004557356,0.0008429648,0.001432505,0.00229107,0.004598648],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0009617598,"about_ca_system_score_gemma":0.0005085495,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.005321743,"about_ca_topic_score_gemma":0.01144159,"domain_scores_codex":[0.999581,0.00004043952,0.00001860217,0.0001155774,0.00011454,0.0001298371],"domain_scores_gemma":[0.9992363,0.000219656,0.0001440447,0.0001343574,0.0001138449,0.0001518162],"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":[0.01451827,0.000840234,0.1282687,0.001345976,0.0007786758,0.01036701,0.002182313,0.004500682,0.5707911,0.02275321,0.1684954,0.07515842],"study_design_scores_gemma":[0.0006988193,0.000858695,0.4522337,0.0002334235,0.0003761823,0.004760277,0.001000392,0.02192586,0.4019511,0.008137012,0.1075126,0.0003117956],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.7484506,0.001819951,0.02607913,0.003875378,0.0006510395,0.0001915209,0.03483812,0.006980266,0.177114],"genre_scores_gemma":[0.9680829,0.0002931573,0.005256612,0.0006065356,0.00005755173,0.000109429,0.01017172,0.0005370375,0.01488502],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.03570258,"threshold_uncertainty_score":0.119437,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.02017309423563774,"score_gpt":0.2592623295968297,"score_spread":0.239089235361192,"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."}}