Search for an additional, heavy Higgs boson in the [Formula: see text] decay channel at [Formula: see text] in [Formula: see text] collision data with the ATLAS detector

. 2016 ; 76 (1) : 45. [epub] 20160125

Status PubMed-not-MEDLINE Jazyk angličtina Země Francie Médium print-electronic

Typ dokumentu časopisecké články

Perzistentní odkaz   https://www.medvik.cz/link/pmid26949371

A search is presented for a high-mass Higgs boson in the [Formula: see text], [Formula: see text], [Formula: see text], and [Formula: see text] decay modes using the ATLAS detector at the CERN Large Hadron Collider. The search uses proton-proton collision data at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 20.3 fb[Formula: see text]. The results of the search are interpreted in the scenario of a heavy Higgs boson with a width that is small compared with the experimental mass resolution. The Higgs boson mass range considered extends up to [Formula: see text] for all four decay modes and down to as low as 140 [Formula: see text], depending on the decay mode. No significant excess of events over the Standard Model prediction is found. A simultaneous fit to the four decay modes yields upper limits on the production cross-section of a heavy Higgs boson times the branching ratio to [Formula: see text] boson pairs. 95 % confidence level upper limits range from 0.53 pb at [Formula: see text] GeV to 0.008 pb at [Formula: see text] GeV for the gluon-fusion production mode and from 0.31 pb at [Formula: see text] GeV to 0.009 pb at [Formula: see text] GeV for the vector-boson-fusion production mode. The results are also interpreted in the context of Type-I and Type-II two-Higgs-doublet models.

2 Physikalisches Institut Georg August Universität Göttingen Germany

2 Physikalisches Institut Justus Liebig Universität Giessen Giessen Germany

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

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 Republic of Belarus

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 National de l'Energie des Sciences Techniques Nucleaires Rabat Morocco

Centro de Física Nuclear da Universidade de Lisboa Lisboa Portugal

CERN Geneva Switzerland

CPPM Aix Marseille Université and CNRS IN2P3 Marseille France

Czech Technical University in Praha Praha Czech Republic

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

Dep Fisica and CEFITEC of Faculdade de Ciencias e Tecnologia Universidade Nova de Lisboa Caparica Portugal

Departamento de Física Pontificia Universidad Católica de Chile Santiago Chile

Departamento de Fisica Teorica C 15 Universidad Autonoma de Madrid Madrid Spain

Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada Spain

Departamento de Física Universidad de Buenos Aires Buenos Aires Argentina

Departamento de Física Universidad Técnica Federico Santa María Valparaiso Chile

Departamento de Fisica Universidade do Minho Braga Portugal

Department for Physics and Technology University of Bergen Bergen Norway

Department of Modern Physics University of Science and Technology of China Anhui China

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

Department of Physics and Astronomy Shanghai Key Laboratory for Particle Physics and Cosmology Shanghai Jiao Tong University Shanghai China

Department of Physics and Astronomy University College London London UK

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 Ankara University Ankara Turkey

Department of Physics Bogazici University Istanbul Turkey

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Department of Physics Engineering Gaziantep University Gaziantep Turkey

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Department of Physics Humboldt University Berlin Germany

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Department of Physics Jožef Stefan Institute and University of Ljubljana Ljubljana Slovenia

Department of Physics Kyushu University Fukuoka Japan

Department of Physics Massachusetts Institute of Technology Cambridge MA USA

Department of Physics McGill University Montreal QC Canada

Department of Physics Nanjing University Jiangsu China

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Department of Physics University of Arizona Tucson AZ USA

Department of Physics University of Coimbra Coimbra Portugal

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DESY Hamburg and Zeuthen Germany

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 Roma Italy

Dipartimento di Fisica Università della Calabria Rende Italy

Dipartimento di Fisica Università di Genova Genova Italy

Dipartimento di Fisica Università di Milano Milano Italy

Dipartimento di Fisica Università di Napoli Napoli Italy

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Dipartimento di Matematica e Fisica Università del Salento Lecce Italy

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Division of Physics TOBB University of Economics and Technology Ankara Turkey

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

Electrical Circuits Department Federal University of Juiz de Fora Juiz de Fora Brazil

Enrico Fermi Institute University of Chicago Chicago IL USA

Faculdade de Ciências Universidade de Lisboa Lisboa Portugal

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

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Fakultät für Mathematik und Physik Albert Ludwigs Universität Freiburg Germany

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Federal University of Sao Joao del Rei Sao Joao del Rei Brazil

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

Graduate School of Science Kobe University Kobe Japan

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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

INFN Gruppo Collegato di Cosenza Laboratori Nazionali di Frascati Frascati Italy

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INFN Sezione di Bologna Bologna Italy

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Institut de Física d'Altes Energies and Departament de Física de la Universitat Autònoma de Barcelona Barcelona Spain

Institut für Astro und Teilchenphysik Leopold Franzens Universität Innsbruck Austria

Institut für Experimentelle Physik 4 Technische Universität Dortmund Dortmund Germany

Institut für Kern und Teilchenphysik Technische Universität Dresden Dresden 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 High Energy Physics Chinese Academy of Sciences Beijing China

Institute of Nuclear Physics Polish Academy of Sciences Kraków Poland

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

Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan

Institute of Physics University of Belgrade Belgrade Serbia

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

Instituto de Fisica Universidade de Sao Paulo São Paulo Brazil

Istanbul Aydin University Istanbul Turkey

Joint Institute for Nuclear Research JINR Dubna Dubna Russia

KEK High Energy Accelerator Research Organization Tsukuba Japan

Kirchhoff Institut für Physik Ruprecht Karls Universität Heidelberg Heidelberg Germany

Kyoto University of Education Kyoto Japan

Laboratoire de Physique Corpusculaire Clermont Université and Université Blaise Pascal and CNRS IN2P3 Clermont Ferrand France

Laboratoire de Physique Nucléaire et de Hautes Energies UPMC and Université Paris Diderot and CNRS IN2P3 Paris France

Laboratoire de Physique Subatomique et de Cosmologie Université Grenoble Alpes CNRS IN2P3 Grenoble France

Laboratório de Instrumentação e Física Experimental de Partículas LIP Lisboa Portugal

Laboratory for Particle Physics and Cosmology Harvard University Cambridge MA USA

LAL Université Paris Sud and CNRS IN2P3 Orsay France

LAPP CNRS IN2P3 and Université Savoie Mont Blanc Annecy le Vieux France

Louisiana Tech University Ruston LA USA

Marian Smoluchowski Institute of Physics Jagiellonian University Kraków Poland

Max Planck Institut für Physik München Germany

Nagasaki Institute of Applied Science Nagasaki Japan

National Institute of Physics and Nuclear Engineering Bucharest Romania

National Research Centre 'Kurchatov Institute' B P Konstantinov Petersburg Nuclear Physics Institute St Petersburg Russia

National Research Nuclear University MEPhI Moscow Russia

National Scientific and Educational Centre for Particle and High Energy Physics Minsk Republic of Belarus

Nevis Laboratory Columbia University Irvington NY USA

Niels Bohr Institute University of Copenhagen Kobenhavn Denmark

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

Ohio State University Columbus OH USA

Oliver Lodge Laboratory University of Liverpool Liverpool UK

P N Lebedev Institute of Physics Academy of Sciences Moscow Russia

Palacký University RCPTM Olomouc Czech Republic

Particle Physics Department Rutherford Appleton Laboratory Didcot UK

Physics Department Brookhaven National Laboratory Upton NY USA

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

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University of Iowa Iowa City IA USA

University Politehnica Bucharest Bucharest Romania

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