{"id":"W1827577213","doi":"10.1103/physrevlett.107.082001","title":"Search for a Fourth Generation<mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><mml:msup><mml:mi>t</mml:mi><mml:mo>′</mml:mo></mml:msup></mml:math>Quark 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":2011,"lang":"lv","type":"article","venue":"Physical Review Letters","topic":"Particle physics theoretical and experimental studies","field":"Physics and Astronomy","cited_by":33,"is_retracted":false,"has_abstract":true,"ca_institutions":"York University; Simon Fraser University","funders":"U.S. Department of Energy; Science and Technology Facilities Council; National Science Foundation","keywords":"Physics; Tevatron; Jet (fluid); Luminosity; Particle physics; Top quark; Collider; Fermilab; Nuclear physics; Neutrino; Quark; Production (economics); Bar (unit); Large Hadron Collider; Astrophysics","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":[0.001457025,0.001606732,0.001665676,0.003338438,0.003744465,0.004239546,0.002988596,0.004063832,0.2639703],"category_scores_gemma":[0.003908581,0.001491225,0.003320905,0.003419422,0.0006773152,0.00399836,0.003260877,0.002651291,0.1218088],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.002724025,"about_ca_system_score_gemma":0.002654632,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.01178275,"about_ca_topic_score_gemma":0.0203792,"domain_scores_codex":[0.9989538,0.0000783158,0.00004210618,0.0002416167,0.0003562108,0.0003279281],"domain_scores_gemma":[0.997973,0.0004668102,0.0001963837,0.0004945323,0.0006028053,0.0002663856],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"not_applicable","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.001686025,0.0003933756,0.01252202,0.001170445,0.0003072788,0.003250019,0.0009415482,0.004554101,0.02847575,0.06234317,0.7065999,0.1777564],"study_design_scores_gemma":[0.0006218089,0.0003973134,0.006845585,0.0002980949,0.0003680215,0.002050765,0.001353648,0.03419985,0.06269952,0.04696636,0.8439525,0.0002465157],"study_design_candidate":"bench_or_experimental","study_design_consensus":null,"genre_codex":"other","genre_gemma":"empirical","genre_scores_codex":[0.08901817,0.002779539,0.1789472,0.01300198,0.003297842,0.0005600969,0.04025499,0.05176029,0.6203798],"genre_scores_gemma":[0.2879605,0.001175524,0.1481281,0.006899634,0.0004863159,0.0005521963,0.07227398,0.02335949,0.4591642],"genre_candidate":"empirical","genre_consensus":null,"teacher_disagreement_score":0.2639703,"threshold_uncertainty_score":0.8830686,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.02621580289483855,"score_gpt":0.2681624144983089,"score_spread":0.2419466116034704,"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."}}