{"id":"W4400667974","doi":"10.3204/pubdb-2025-02403","title":"Search for light neutral particles decaying promptly into collimated pairs of electrons or muons in pp collisions at $\\sqrt{s}$ = 13 $\\text {T}\\text {e}\\hspace{-1.00006pt}\\text {V}$ with the ATLAS detector","year":2025,"lang":"en","type":"preprint","venue":"arXiv (Cornell University)","topic":"Dark Matter and Cosmic Phenomena","field":"Physics and Astronomy","cited_by":0,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"CHIST-ERA; H2020 Marie Skłodowska-Curie Actions; Institut National de Physique Nucléaire et de Physique des Particules; Agencia Estatal de Investigación; Agencia Nacional de Promoción Científica y Tecnológica; Fundação para a Ciência e a Tecnologia; Japan Society for the Promotion of Science; Ministero dell'Università e della Ricerca; Narodowa Agencja Wymiany Akademickiej; Forskningsrådet om Hälsa, Arbetsliv och Välfärd; European Social Fund; Royal Society; Centre National pour la Recherche Scientifique et Technique; European Regional Development Fund; British Columbia Knowledge Development Fund; Max-Planck-Gesellschaft; Centre National de la Recherche Scientifique; Narodowym Centrum Nauki; Knut och Alice Wallenbergs Stiftelse; U.S. Department of Energy; Carl Tryggers Stiftelse för Vetenskaplig Forskning; Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro; Israel Science Foundation; Ministerstwo Edukacji i Nauki; Conselho Nacional de Desenvolvimento Científico e Tecnológico; Bundesministerium für Wissenschaft, Forschung und Wirtschaft; Generalitat de Catalunya; Generalitat Valenciana; Agencia Nacional de Investigación y Desarrollo; UK Research and Innovation; Istituto Nazionale di Fisica Nucleare; Grantová Agentura České Republiky; Austrian Science Fund; Natural Sciences and Engineering Research Council of Canada; Ministry of Education, Culture, Sports, Science and Technology; Bundesministerium für Bildung und Forschung; National Science and Technology Council; Ministerstvo Školství, Mládeže a Tělovýchovy; Horizon 2020 Framework Programme; Vetenskapsrådet; National Natural Science Foundation of China; European Commission; Leverhulme Trust; Fundação de Amparo à Pesquisa do Estado de São Paulo; Javna Agencija za Raziskovalno Dejavnost RS; Science and Technology Facilities Council; Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung; Deutsche Forschungsgemeinschaft; Nederlandse Organisatie voor Wetenschappelijk Onderzoek; Ministry of Science and Technology of the People's Republic of China; Agence Nationale de la Recherche; National Science Foundation; Baden-Württemberg Stiftung; H2020 European Research Council; Norges Forskningsråd; Alexander von Humboldt-Stiftung; TRIUMF; Danmarks Grundforskningsfond; Türkiye Enerji, Nükleer ve Maden Araştırma Kurumu; Canarie; CERN; Centres de Recerca de Catalunya; Ministerio de Ciencia e Innovación","keywords":"Physics; Muon; Particle physics; Nuclear physics; Higgs boson; Electron; Large Hadron Collider; Photon; Atlas (anatomy); Branching fraction; Gluon; Boson; Quark; Optics","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":[0.0007951524,0.0005722443,0.0005818368,0.001063049,0.0005091813,0.001088609,0.000582584,0.0004895474,0.002396334],"category_scores_gemma":[0.0005579037,0.0003931471,0.0002817148,0.001576072,0.0002381656,0.0004278212,0.0006572063,0.0002191184,0.0005613714],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0004228548,"about_ca_system_score_gemma":0.0005484118,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.00162686,"about_ca_topic_score_gemma":0.002858109,"domain_scores_codex":[0.9995498,0.00009956813,0.00001877403,0.0001164427,0.0001349341,0.00008044669],"domain_scores_gemma":[0.9995104,0.0001797395,0.00008997467,0.00005167037,0.00005661955,0.0001116646],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.007302453,0.001078847,0.6043556,0.0004568591,0.0009343812,0.006199197,0.0005867305,0.01052567,0.3017111,0.01147031,0.003233019,0.05214587],"study_design_scores_gemma":[0.001080573,0.004122769,0.5027298,0.00004707254,0.0007942953,0.006998667,0.0008276447,0.08068019,0.384425,0.005947916,0.01213404,0.0002120497],"study_design_candidate":"bench_or_experimental","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9887932,0.0002690336,0.005522687,0.00005269379,0.000006163635,0.00004386027,0.001135739,0.0001686029,0.004008052],"genre_scores_gemma":[0.9863949,0.000135815,0.008856945,0.00003527704,0.00001255024,0.0000233982,0.002759848,0.00002403802,0.001757185],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.002396334,"threshold_uncertainty_score":0.008016586,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.03171441289490465,"score_gpt":0.2090680396462361,"score_spread":0.1773536267513314,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). 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