Combination of Searches for Invisible Higgs Boson Decays with the ATLAS Experiment

. 2019 Jun 14 ; 122 (23) : 231801.

Status PubMed-not-MEDLINE Jazyk angličtina Země Spojené státy americké Médium print

Typ dokumentu časopisecké články

Perzistentní odkaz   https://www.medvik.cz/link/pmid31298882

Dark matter particles, if sufficiently light, may be produced in decays of the Higgs boson. This Letter presents a statistical combination of searches for H→invisible decays where H is produced according to the standard model via vector boson fusion, Z(ℓℓ)H, and W/Z(had)H, all performed with the ATLAS detector using 36.1 fb^{-1} of pp collisions at a center-of-mass energy of sqrt[s]=13 TeV at the LHC. In combination with the results at sqrt[s]=7 and 8 TeV, an exclusion limit on the H→invisible branching ratio of 0.26(0.17_{-0.05}^{+0.07}) at 95% confidence level is observed (expected).

2 Physikalisches Institut Georg August Universität Göttingen Göttingen Germany

2 Physikalisches Institut Justus Liebig Universität Giessen Giessen Germany

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

Bahcesehir University Faculty of Engineering and Natural Sciences Istanbul Turkey

Budker Institute of Nuclear Physics and NSU SB RAS Novosibirsk Russia

California State University California USA

Cavendish Laboratory University of Cambridge Cambridge United Kingdom

Center for High Energy Physics University of Oregon Eugene Oregon 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 Lisboa Portugal

CERN Geneva Switzerland

Charles University Faculty of Mathematics and Physics Prague Czech Republic

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 Lisboa Portugal

Departamento de Física Pontificia Universidad Católica de Chile Santiago Chile

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Department of Particle Physics Weizmann Institute of Science Rehovot Israel

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Deutsches Elektronen Synchrotron DESY Hamburg and Zeuthen Germany

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Enrico Fermi Institute University of Chicago Chicago Illinois USA

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ICTP Trieste Italy

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Institute for High Energy Physics of the National Research Centre Kurchatov Institute Protvino Russia

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Institute for Theoretical and Experimental Physics of the National Research Centre Kurchatov Institute Moscow Russia

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

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Institute of Nuclear Physics Polish Academy of Sciences Krakow Poland

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

Institute of Physics University of Belgrade Belgrade Serbia

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

IRFU CEA Université Paris Saclay Gif sur Yvette France

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Kirchhoff Institut für Physik Ruprecht Karls Universität Heidelberg Heidelberg Germany

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

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