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Search for anomalous production of prompt like-sign muon pairs and constraints on physics beyond the standard model with the ATLAS detector

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ATLAS Collaboration (Including: Farrington, Sinead). (2012) Search for anomalous production of prompt like-sign muon pairs and constraints on physics beyond the standard model with the ATLAS detector. Physical Review D (Particles, Fields, Gravitation and Cosmology), Vol.85 (No.3). 032004. doi:10.1103/PhysRevD.85.032004 ISSN 1550-7998.

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Official URL: http://dx.doi.org/10.1103/PhysRevD.85.032004

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Abstract

An inclusive search for anomalous production of two prompt, isolated muons with the same electric charge is presented. The search is performed in a data sample corresponding to 1.6  fb-1 of integrated luminosity collected in 2011 at √s=7  TeV with the ATLAS detector at the LHC. Muon pairs are selected by requiring two isolated muons of the same electric charge with pT>20  GeV and |η|<2.5. Minimal requirements are placed on the rest of the event activity. The distribution of the invariant mass of the muon pair m(μμ) is found to agree well with the background expectation. Upper limits on the cross section for anomalous production of two muons with the same electric charge are placed as a function of m(μμ) within a fiducial region defined by the event selection. The fiducial cross-section limit constrains the like-sign top-quark pair-production cross section to be below 3.7 pb at 95% confidence level. The data are also analyzed to search for a narrow like-sign dimuon resonance as predicted for e.g. doubly charged Higgs bosons (H±±). Assuming pair production of H±± bosons and a branching ratio to muons of 100% (33%), this analysis excludes masses below 355 (244) GeV and 251 (209) GeV for H±± bosons coupling to left-handed and right-handed fermions, respectively.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH): Muons, Large Hadron Collider (France and Switzerland)
Journal or Publication Title: Physical Review D (Particles, Fields, Gravitation and Cosmology)
Publisher: American Physical Society
ISSN: 1550-7998
Official Date: 1 February 2012
Dates:
DateEvent
1 February 2012Published
Volume: Vol.85
Number: No.3
Number of Pages: 23
Page Range: 032004
DOI: 10.1103/PhysRevD.85.032004
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access (Creative Commons)
Date of first compliant deposit: 20 December 2015
Date of first compliant Open Access: 20 December 2015
Funder: Agencia Nacional de Promoción Científica y Tecnológica (Argentina), Yerevan Physics Institute (Armenia), Australian Research Council (ARC), Austria. Bundesministerium für Wissenschaft und Forschung [Federal Ministry of Education, Science and Culture], Azärbaycan Milli Elmlär Akademiyası, Sosny Science and Technology Center (Belarus), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP), Natural Sciences and Engineering Research Council of Canada (NSERC), National Research Council Canada (NRCC), Canada Foundation for Innovation (CFI), European Organization for Nuclear Research (CERN), Chile. Comisión Nacional de Investigación Científica y Tecnológica (CONICYT), Zhongguo ke xue yuan [Chinese Academy of Sciences] (CAS), China. Guo jia ke xue ji shu bu [Ministry of Science and Technology], Guo jia zi ran ke xue ji jin wei yuan hui (China) [National Natural Science Foundation of China] (NSFC), Fondo Colombiano de Investigaciones Científicas y Proyectos Especiales Francisco José de Caldas (COLCIENCIAS), Czech Socialist Republic (Czechoslovakia). Ministerstvo školství, mládeže a tělovýchovy, Czech Socialist Republic (Czechoslovakia). Ministerstvo průmyslu a obchodu, VSC CR (Czech Republic), Danmarks Grundforskningsfond [Danish National Research Foundation], Statens naturvidenskabelige forskningsråd (Denmark) [Natural Science Research Council], Lundbeck Foundation, European Union (EU), Centre national de la recherche scientifique (France) (CNRS), Direction des Sciences de la Matière, Sakʻartʻvelos mecʻnierebatʻa erovnuli akademia [Georgian National Academy of Sciences] (GNAS), Germany. Bundesministerium für Bildung und Forschung (BMBF), Deutsche Forschungsgemeinschaft (DFG), Hermann von Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF), Max-Planck-Gesellschaft zur Förderung der Wissenschaften [Max Planck Society for the Advancement of Science], Alexander von Humboldt-Stiftung (AvHS), Greece. General Secretariat of Research and Technology, Israel Science Foundation (ISF), Minerva Stiftung, German-Israeli Foundation for Scientific Research and Development, Deutsch-Israelische Projektkooperation, Benoziyo Center (Israel), Istituto nazionale di fisica nucleare (INFN), Japan. Monbushō, Nihon Gakujutsu Shinkōkai [Japan Society for the Promotion of Science] (NGS), Centre national pour la recherche scientifique et technique (Morocco), Stichting voor Fundamenteel Onderzoek der Materie (FOM) [Foundation for Fundamental Research on Matter], Nederlandse Organisatie voor Wetenschappelijk Onderzoek [Netherlands Organisation for Scientific Research] (NWO), Norges forskningsråd [Norwegian Research Council], Poland. Ministerstwo Nauki i Szkolnictwa Wyższego [Ministry of Science and Higher Education] (MNiSW), Gabinete dos Relações Internationais da Ciência e Ensino Superior (Portugal), Fundação para a Ciência e a Tecnologia (FCT), Romania. Ministerul Educației, Cercetării și Tineretului [Ministry of Education, Research, Youth and Sports], Russia (Federation). Ministerstvo obrazovanii︠a︡ i nauki [Ministry of Education and Science], Federalʹnoe agentstvo po atomnoĭ ėnergii (Russia), Obʺedinennyĭ institut i︠a︡dernykh issledovaniĭ (Dubna, Chekhovskiĭ raĭon, Russia), Serbia. Ministarstvo za nauku i tehnologiju i razvoj, Slovakia. Ministerstvo školstva, Slovenian Research Agency, Slovenia. Ministrstvo za visoko šolstvo, znanost in tehnologijo, South Africa. Dept. of Science and Technology, Spain. Ministerio de Ciencia e Innovación (MICINN), Sweden. Vetenskapsrådet [Research Council], Knut och Alice Wallenbergs Stiftelse (Sweden), Switzerland. Staatssekretariat für Ausbildung und Forschung (SER), Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung [Swiss National Science Foundation] (SNSF), Bern (Switzerland : Canton), Guo jia ke xue wei yuan hui [National Science Council (Taiwan)], Türkiye Atom Enerjisi Kurumu (TAEK), Science and Technology Facilities Council (Great Britain) (STFC), Royal Society (Great Britain), Leverhulme Trust (LT), United States. Dept. of Energy, National Science Foundation (U.S.) (NSF), Institut national de physique nucléaire et de physique des particules, France. Commissariat à l'énergie atomique (CEA), National Research Foundation (South Africa), Geneva (Switzerland : Canton)

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