{"id":"W1904582879","doi":"10.1140/epjc/s10052-016-4034-8","title":"Search for new phenomena in events with at least three photons collected in pp collisions at $$\\sqrt{s}$$ s = 8 TeV with the ATLAS detector","year":2016,"lang":"en","type":"article","venue":"The European Physical Journal C","topic":"Particle physics theoretical and experimental studies","field":"Physics and Astronomy","cited_by":116,"is_retracted":false,"has_abstract":true,"ca_institutions":"Simon Fraser University; University of British Columbia; York University; TRIUMF; Carleton University; University of Victoria; McGill University; University of Alberta; Université de Montréal; Institute of Particle Physics; University of Toronto","funders":"Fundação para a Ciência e a Tecnologia; Institut National de Physique Nucléaire et de Physique des Particules; Science and Technology Facilities Council; Natural Sciences and Engineering Research Council of Canada; H. Lundbeck A/S; Centre National pour la Recherche Scientifique et Technique; Georgian National Science Foundation; National Research Center \"Kurchatov Institute\"; Centre National de la Recherche Scientifique; Israel Science Foundation; Lundbeckfonden; Leverhulme Trust; General Secretariat for Research and Technology; Ministry of Education, Culture, Sports, Science and Technology; Nederlandse Organisatie voor Wetenschappelijk Onderzoek; Bundesministerium für Bildung und Forschung; Israeli Centers for Research Excellence; Joint Institute for Nuclear Research; National Science Council; Japan Society for the Promotion of Science; Conselho Nacional de Desenvolvimento Científico e Tecnológico; U.S. Department of Energy; National Natural Science Foundation of China; Fundação de Amparo à Pesquisa do Estado de São Paulo; Javna Agencija za Raziskovalno Dejavnost RS; Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung; Ministerstwo Edukacji i Nauki; CERN; Deutsche Forschungsgemeinschaft; Department of Science and Technology, Ministry of Science and Technology, India; European Commission; National Science Foundation; Alexander von Humboldt-Stiftung; TRIUMF; Max-Planck-Gesellschaft; Royal Society; Comisión Nacional de Investigación Científica y Tecnológica; Danmarks Grundforskningsfond; Türkiye Atom Enerjisi Kurumu","keywords":"Physics; Particle physics; Pseudoscalar; Photon; Higgs boson; Branching fraction; Large Hadron Collider; Nuclear physics; Boson; Standard Model (mathematical formulation); Luminosity; Atlas (anatomy); Meson; Astrophysics; Quantum mechanics","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":[0.001812186,0.0008848284,0.0009553818,0.002525731,0.001019341,0.001467591,0.0006538025,0.000788235,0.003971559],"category_scores_gemma":[0.0015781,0.0006409257,0.0009439907,0.002472303,0.0006347664,0.0008216646,0.001326962,0.0007376306,0.0006273892],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.000436593,"about_ca_system_score_gemma":0.0004125615,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.000554257,"about_ca_topic_score_gemma":0.0008935065,"domain_scores_codex":[0.9990737,0.0001775098,0.00006325932,0.0002650734,0.00024861,0.0001719042],"domain_scores_gemma":[0.9961314,0.001945251,0.0007762574,0.0004133207,0.0002967547,0.0004369968],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.008288188,0.0008149604,0.5821642,0.0006843336,0.001053442,0.007038885,0.0007797178,0.003122517,0.3600923,0.006367559,0.001847226,0.02774661],"study_design_scores_gemma":[0.0003202127,0.002197206,0.6935171,0.0000554902,0.0008760203,0.01197257,0.0003352515,0.015281,0.2567398,0.004858759,0.01359607,0.0002504972],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9771112,0.0007051468,0.01328543,0.00006332349,0.00002088591,0.0001112673,0.003275767,0.0003545806,0.00507236],"genre_scores_gemma":[0.9825482,0.0002946839,0.009667894,0.00007104685,0.00005057135,0.0001117078,0.005638076,0.00008306868,0.001534802],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.003971559,"threshold_uncertainty_score":0.01328617,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01914705075766392,"score_gpt":0.2549417001595196,"score_spread":0.2357946494018557,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). 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