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Search for new phenomena using the invariant mass distribution of same-flavour opposite-sign dilepton pairs in events with missing transverse momentum in s=13 Tepp collisions with the ATLAS detector

. 2018 ; 78 (8) : 625. [epub] 20180806

Status PubMed-not-MEDLINE Language English Country France Media print-electronic

Document type Journal Article

A search for new phenomena in final states containing an e+e- or μ+μ- pair, jets, and large missing transverse momentum is presented. This analysis makes use of proton-proton collision data with an integrated luminosity of 36.1fb-1 , collected during 2015 and 2016 at a centre-of-mass energy s=13TeV with the ATLAS detector at the Large Hadron Collider. The search targets the pair production of supersymmetric coloured particles (squarks or gluinos) and their decays into final states containing an e+e- or μ+μ- pair and the lightest neutralino ( χ~10 ) via one of two next-to-lightest neutralino ( χ~20 ) decay mechanisms: χ~20→Zχ~10 , where the Z boson decays leptonically leading to a peak in the dilepton invariant mass distribution around the Z boson mass; and χ~20→ℓ+ℓ-χ~10 with no intermediate ℓ+ℓ- resonance, yielding a kinematic endpoint in the dilepton invariant mass spectrum. The data are found to be consistent with the Standard Model expectation. Results are interpreted using simplified models, and exclude gluinos and squarks with masses as large as 1.85 and 1.3 Te at 95% confidence level, respectively.

2 Physikalisches Institut Georg August Universität Göttingen Göttingen Germany

2 Physikalisches Institut Justus Liebig Universität Giessen Giessen Germany

Academia Sinica Grid Computing Institute of Physics Academia Sinica Taipei Taiwan

Albert Einstein Center for Fundamental Physics and Laboratory for High Energy Physics University of Bern Bern Switzerland

B 1 Stepanov Institute of Physics National Academy of Sciences of Belarus Minsk Belarus

Bahcesehir University Faculty of Engineering and Natural Sciences Istanbul Turkey

Budker Institute of Nuclear Physics SB RAS Novosibirsk Russia

Cavendish Laboratory University of Cambridge Cambridge UK

Center for High Energy Physics University of Oregon Eugene OR USA

Centre de Calcul de l'Institut National de Physique Nucléaire et de Physique des Particules Villeurbanne France

Centro de Física Nuclear da Universidade de Lisboa Lisbon Portugal

Centro de Investigaciónes Universidad Antonio Nariño Bogota Colombia

CERN Geneva Switzerland

CPPM Aix Marseille Université CNRS IN2P3 Marseille France

Czech Technical University Prague Prague Czech Republic

D 5 Skobeltsyn Institute of Nuclear Physics M 5 Lomonosov Moscow State University Moscow Russia

Departamento de Engenharia Elétrica Universidade Federal de Juiz de Fora Juiz de Fora Brazil

Departamento de Física Faculdade de Ciências Universidade de Lisboa Lisbon Portugal

Departamento de Física Pontificia Universidad Católica de Chile Santiago Chile

Departamento de Física Teorica C 15 and CIAFF Universidad Autónoma de Madrid Madrid Spain

Departamento de Física Teorica y del Cosmos Universidad de Granada Granada Spain

Departamento de Física Universidad de Buenos Aires Buenos Aires Argentina

Departamento de Física Universidad Técnica Federico Santa María Valparaíso Chile

Departamento de Física Universidade de Coimbra Coimbra Portugal

Departamento de Física Universidade do Minho Braga Portugal

Departement de Physique Nucléaire et Corpusculaire Université de Genève Geneva Switzerland

Department for Physics and Technology University of Bergen Bergen Norway

Department of Experimental Particle Physics Jožef Stefan Institute Ljubljana Slovenia

Department of Mechanical Engineering Science University of Johannesburg Johannesburg South Africa

Department of Modern Physics and State Key Laboratory of Particle Detection and Electronics University of Science and Technology of China Hefei China

Department of Particle Physics Weizmann Institute of Science Rehovot Israel

Department of Physics Alexandru Ioan Cuza University of Iasi Iasi Romania

Department of Physics and Astronomy Iowa State University Ames IA USA

Department of Physics and Astronomy Michigan State University East Lansing MI USA

Department of Physics and Astronomy Tufts University Medford MA USA

Department of Physics and Astronomy University College London London UK

Department of Physics and Astronomy University of California Irvine Irvine CA USA

Department of Physics and Astronomy University of New Mexico Albuquerque NM USA

Department of Physics and Astronomy University of Pittsburgh Pittsburgh PA USA

Department of Physics and Astronomy University of Sheffield Sheffield UK

Department of Physics and Astronomy University of Sussex Brighton UK

Department of Physics and Astronomy University of Uppsala Uppsala Sweden

Department of Physics and Astronomy University of Victoria Victoria BC Canada

Department of Physics and Astronomy York University Toronto ON Canada

Department of Physics and Institute for Advanced Study Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China

Department of Physics Ankara University Ankara Turkey

Department of Physics Aristotle University of Thessaloniki Thessaloniki Greece

Department of Physics Bogazici University Istanbul Turkey

Department of Physics Boston University Boston MA USA

Department of Physics Brandeis University Waltham MA USA

Department of Physics Carleton University Ottawa ON Canada

Department of Physics Chinese University of Hong Kong Shatin N T Hong Kong

Department of Physics Duke University Durham NC USA

Department of Physics Engineering Gaziantep University Gaziantep Turkey

Department of Physics Indiana University Bloomington IN USA

Department of Physics McGill University Montreal QC Canada

Department of Physics Nanjing University Nanjing China

Department of Physics National Tsing Hua University Hsinchu Taiwan

Department of Physics New York University New York NY USA

Department of Physics Northern Illinois University DeKalb IL USA

Department of Physics Oklahoma State University Stillwater OK USA

Department of Physics Oxford University Oxford UK

Department of Physics Royal Holloway University of London Egham UK

Department of Physics Shinshu University Nagano Japan

Department of Physics Simon Fraser University Burnaby BC Canada

Department of Physics Stockholm University Stockholm Sweden

Department of Physics Technion Israel Institute of Technology Haifa Israel

Department of Physics Tokyo Institute of Technology Tokyo Japan

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Department of Physics University of Alberta Edmonton AB Canada

Department of Physics University of Arizona Tucson AZ USA

Department of Physics University of British Columbia Vancouver BC Canada

Department of Physics University of Cape Town Cape Town South Africa

Department of Physics University of Hong Kong Hong Kong China

Department of Physics University of Illinois Urbana IL USA

Department of Physics University of Ljubljana Ljubljana Slovenia

Department of Physics University of Massachusetts Amherst MA USA

Department of Physics University of Michigan Ann Arbor MI USA

Department of Physics University of Oslo Oslo Norway

Department of Physics University of Pennsylvania Philadelphia PA USA

Department of Physics University of Texas at Arlington Arlington TX USA

Department of Physics University of Texas at Austin Austin TX USA

Department of Physics University of Toronto Toronto ON Canada

Department of Physics University of Warwick Coventry UK

Department of Physics University of Washington Seattle WA USA

Department of Physics University of Wisconsin Madison WI USA

Department of Physics Yale University New Haven CT USA

Department of Subnuclear Physics Institute of Experimental Physics of the Slovak Academy of Sciences Kosice Slovak Republic

Department Physik Universität Siegen Siegen Germany

Departments of Physics and Astronomy Stony Brook University Stony Brook NY USA

Deutsches Elektronen Synchrotron DESY Hamburg and Zeuthen Germany

Dipartimento di Chimica Fisica e Ambiente Università di Udine Udine Italy

Dipartimento di Fisica e Astronomia Università di Bologna Bologna Italy

Dipartimento di Fisica E Fermi Università di Pisa Pisa Italy

Dipartimento di Fisica Sapienza Università di Roma Rome Italy

Dipartimento di Fisica Università della Calabria Rende Italy

Dipartimento di Fisica Università di Genova Genoa Italy

Dipartimento di Fisica Università di Milano Milan Italy

Dipartimento di Fisica Università di Napoli Naples Italy

Dipartimento di Fisica Università di Pavia Pavia Italy

Dipartimento di Fisica Università di Roma Tor Vergata Rome Italy

Dipartimento di Matematica e Fisica Università del Salento Lecce Italy

Dipartimento di Matematica e Fisica Università Roma Tre Rome Italy

Division of Physics and Tomonaga Center for the History of the Universe Faculty of Pure and Applied Sciences University of Tsukuba Tsukuba Japan

Division of Physics TOBB University of Economics and Technology Ankara Turkey

DRF IRFU CEA Saclay Gif sur Yvette France

E Andronikashvili Institute of Physics Iv Javakhishvili Tbilisi State University Tbilisi Georgia

Enrico Fermi Institute University of Chicago Chicago IL USA

Faculté des Sciences Ain Chock Réseau Universitaire de Physique des Hautes Energies Université Hassan 2 Casablanca Morocco

Faculté des Sciences Semlalia Université Cadi Ayyad LPHEA Marrakech Marrakech Morocco

Faculté des Sciences Université Mohamed Premier and LPTPM Oujda Morocco

Faculté des sciences Université Mohammed 5 Rabat Morocco

Faculty of Applied Information Science Hiroshima Institute of Technology Hiroshima Japan

Faculty of Mathematics and Physics Charles University Prague Czech Republic

Faculty of Mathematics Physics and Informatics Comenius University Bratislava Slovakia

Faculty of Physics and Applied Computer Science AGH University of Science and Technology Krakow Poland

Faculty of Science Kyoto University Kyoto Japan

Faculty of Science Okayama University Okayama Japan

Fakultät für Mathematik und Naturwissenschaften Fachgruppe Physik Bergische Universität Wuppertal Wuppertal Germany

Fakultät für Physik Ludwig Maximilians Universität München Munich Germany

Fakultät für Physik und Astronomie Julius Maximilians Universität Würzburg Würzburg Germany

Fysiska Institutionen Lunds Universitet Lund Sweden

Graduate School of Science and Kobayashi Maskawa Institute Nagoya University Nagoya Japan

Graduate School of Science and Technology Tokyo Metropolitan University Tokyo Japan

Graduate School of Science Kobe University Kobe Japan

Graduate School of Science Osaka University Osaka Japan

Group of Particle Physics University of Montreal Montreal QC Canada

High Energy Physics Division Argonne National Laboratory Argonne IL USA

High Energy Physics Institute Tbilisi State University Tbilisi Georgia

Homer L Dodge Department of Physics and Astronomy University of Oklahoma Norman OK USA

Horia Hulubei National Institute of Physics and Nuclear Engineering Bucharest Romania

ICTP Trieste Italy

INFN e Laboratori Nazionali di Frascati Frascati Italy

INFN Gruppo Collegato di Cosenza Laboratori Nazionali di Frascati Frascati Italy

INFN Gruppo Collegato di Udine Sezione di Trieste Udine Italy

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Institut de Física d'Altes Energies Barcelona Institute of Science and Technology Barcelona Spain

Institut für Astro und Teilchenphysik Leopold Franzens Universität Innsbruck Austria

Institut für Kern und Teilchenphysik Technische Universität Dresden Dresden Germany

Institut für Physik Humboldt Universität zu Berlin Berlin Germany

Institut für Physik Universität Mainz Mainz Germany

Institute for Mathematics Astrophysics and Particle Physics Radboud University Nijmegen Nikhef Nijmegen The Netherlands

Institute for Theoretical and Experimental Physics Moscow Russia

Institute of Frontier and Interdisciplinary Science and Key Laboratory of Particle Physics and Particle Irradiation Shandong University Qingdao China

Institute of High Energy Physics Chinese Academy of Sciences Beijing China

Institute of Nuclear Physics Polish Academy of Sciences Krakow Poland

Institute of Physics Academia Sinica Taipei Taiwan

Institute of Physics Academy of Sciences of the Czech Republic Prague Czech Republic

Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan

Institute of Physics University of Belgrade Belgrade Serbia

Instituto de Física Corpuscular Centro Mixto Universidad de Valencia CSIC Valencia Spain

Instituto de Física La Plata Universidad Nacional de La Plata and CONICET La Plata Argentina

Instituto de Fisica Universidade de Sao Paulo Sao Paulo Brazil

International Center for Elementary Particle Physics and Department of Physics University of Tokyo Tokyo Japan

Istanbul Aydin University Istanbul Turkey

Istanbul Bilgi University Faculty of Engineering and Natural Sciences Istanbul Turkey

Joint Institute for Nuclear Research Dubna Russia

KEK High Energy Accelerator Research Organization Tsukuba Japan

Kirchhoff Institut für Physik Ruprecht Karls Universität Heidelberg Heidelberg Germany

Konstantinov Nuclear Physics Institute of National Research Centre Kurchatov Institute PNPI St Petersburg Russia

Kyoto University of Education Kyoto Japan

Laboratório de Instrumentação e Física Experimental de Partículas LIP Lisbon Portugal

Laboratory for Particle Physics and Cosmology Harvard University Cambridge MA USA

LAL Université Paris Sud CNRS IN2P3 Université Paris Saclay Orsay France

LAPP Université Grenoble Alpes Université Savoie Mont Blanc CNRS IN2P3 Annecy France

Lehrstuhl für Experimentelle Physik 4 Technische Universität Dortmund Dortmund Germany

Louisiana Tech University Ruston LA USA

LPC Université Clermont Auvergne CNRS IN2P3 Clermont Ferrand France

LPNHE Sorbonne Université Paris Diderot Sorbonne Paris Cité CNRS IN2P3 Paris France

LPSC Université Grenoble Alpes CNRS IN2P3 Grenoble INP Grenoble France

Marian Smoluchowski Institute of Physics Jagiellonian University Krakow Poland

Max Planck Institut für Physik Munich Germany

Nagasaki Institute of Applied Science Nagasaki Japan

National Research Nuclear University MEPhI Moscow Russia

Nevis Laboratory Columbia University Irvington NY USA

Niels Bohr Institute University of Copenhagen Copenhagen Denmark

Nikhef National Institute for Subatomic Physics University of Amsterdam Amsterdam The Netherlands

Novosibirsk State University Novosibirsk Russia

Ohio State University Columbus OH USA

Oliver Lodge Laboratory University of Liverpool Liverpool UK

Oskar Klein Centre Stockholm Sweden

P N Lebedev Physical Institute of the Russian Academy of Sciences Moscow Russia

Palacký University RCPTM Joint Laboratory of Optics Olomouc Czech Republic

Particle Physics Department Rutherford Appleton Laboratory Didcot UK

Physics Department Brookhaven National Laboratory Upton NY USA

Physics Department Lancaster University Lancaster UK

Physics Department National and Kapodistrian University of Athens Athens Greece

Physics Department National Institute for Research and Development of Isotopic and Molecular Technologies Cluj Napoca Romania

Physics Department National Technical University of Athens Zografou Greece

Physics Department Royal Institute of Technology Stockholm Sweden

Physics Department Southern Methodist University Dallas TX USA

Physics Department SUNY Albany Albany NY USA

Physics Department Tsinghua University Beijing China

Physics Department University of Texas at Dallas Richardson TX USA

Physics Division Lawrence Berkeley National Laboratory and University of California Berkeley CA USA

Physikalisches Institut Albert Ludwigs Universität Freiburg Freiburg Germany

Physikalisches Institut Ruprecht Karls Universität Heidelberg Heidelberg Germany

Physikalisches Institut Universität Bonn Bonn Germany

Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel

Research Center for Advanced Particle Physics and Department of Physics Kyushu University Fukuoka Japan

Research Institute for Nuclear Problems of Byelorussian State University Minsk Belarus

Santa Cruz Institute for Particle Physics University of California Santa Cruz Santa Cruz CA USA

School of Physics and Astronomy Queen Mary University of London London UK

School of Physics and Astronomy Shanghai Jiao Tong University KLPPAC MoE SKLPPC Shanghai China

School of Physics and Astronomy University of Birmingham Birmingham UK

School of Physics and Astronomy University of Manchester Manchester UK

School of Physics University of Melbourne Melbourne VIC Australia

School of Physics University of Sydney Sydney Australia

School of Physics University of the Witwatersrand Johannesburg South Africa

SLAC National Accelerator Laboratory Stanford CA USA

State Research Center Institute for High Energy Physics NRC KI Protvino Russia

SUPA School of Physics and Astronomy University of Edinburgh Edinburgh UK

SUPA School of Physics and Astronomy University of Glasgow Glasgow UK

Tomsk State University Tomsk Russia

Transilvania University of Brasov Brasov Romania

TRIUMF Vancouver BC Canada

Tsung Dao Lee Institute Shanghai China

Universidade Federal de Sao Joao del Rei Sao Joao del Rei Brazil

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Università degli Studi di Trento Trento Italy

University of Chinese Academy of Science Beijing China

University of Iowa Iowa City IA USA

Waseda University Tokyo Japan

West University in Timisoara Timisoara Romania

Yerevan Physics Institute Yerevan Armenia

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