Observation of H→bb¯ decays and VH production with the ATLAS detector

The ATLAS collaboration

Research output: Contribution to journalArticlepeer-review

215 Scopus citations

Abstract

A search for the decay of the Standard Model Higgs boson into a bb¯ pair when produced in association with a W or Z boson is performed with the ATLAS detector. The data, corresponding to an integrated luminosity of 79.8fb−1 were collected in proton–proton collisions during Run 2 of the Large Hadron Collider at a centre-of-mass energy of 13TeV. For a Higgs boson mass of 125GeV, an excess of events over the expected background from other Standard Model processes is found with an observed (expected) significance of 4.9 (4.3) standard deviations. A combination with the results from other searches in Run 1 and in Run 2 for the Higgs boson in the bb¯ decay mode is performed, which yields an observed (expected) significance of 5.4 (5.5) standard deviations, thus providing direct observation of the Higgs boson decay into b-quarks. The ratio of the measured event yield for a Higgs boson decaying into bb¯ to the Standard Model expectation is 1.01±0.12(stat.)−0.15 +0.16(syst.). Additionally, a combination of Run 2 results searching for the Higgs boson produced in association with a vector boson yields an observed (expected) significance of 5.3 (4.8) standard deviations.

Original languageEnglish
Pages (from-to)59-86
Number of pages28
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume786
DOIs
StatePublished - 10 Nov 2018

Funding

FundersFunder number
Not addedST/J005533/1, ST/K001310/1, ST/L006162/1, ST/J004804/1, ST/H001158/1, ST/M000753/1, ST/N000307/1, ST/L003449/1, 1793173, ST/N000420/1
AvH Foundation
Benoziyo Center , Israel
CEA-DRF/IRFU
Canada Council
Cantons of Bern and Geneva
DNSRCIN2P3-CNRS
DST/NRF
EU-ESF
MES of Russia
MESTD
MIZŠ
MNE/IFA
MSMT
MSSR
Minerva , Israel
RGC
Région Auvergne
VSC CR
National Science Foundation1812377, 1624739
National Science Foundation
U.S. Department of Energy
Biomedical Research Foundation of Northwest Louisiana
Bloom's Syndrome Foundation
American Roentgen Ray Society
Arkansas Space Grant Consortium
Society of Abdominal Radiology
Brookhaven National Laboratory
California Department of Fish and Wildlife
Scientific Education and Research Institute
Ministry of Science and Technology
University of Kentucky
Departamento Administrativo de Ciencia, Tecnología e Innovación
Cummings Foundation
Ontario Innovation Trust
Canarie
Poultry Industry Council
Türkiye Atom Enerjisi Kurumu
Horizon 2020 Framework Programme675440
Horizon 2020 Framework Programme
H2020 Marie Skłodowska-Curie Actions
Biomedical Research Foundation
University of South Alabama
Arizona-Nevada Academy of Science
TRIUMF
CERN
University of Washington College of Arts and Sciences
Iowa Science Foundation
Northern Ireland Community Relations Council
Compute Canada
National Research Council
College of Arts and Sciences, University of Nebraska-Lincoln
Glycemic Index Foundation
Natural Sciences and Engineering Research Council of Canada
Science and Technology Facilities CouncilST/N000447/1, GRIDPP
Science and Technology Facilities Council
Leverhulme Trust
Royal Society
British Skin Foundation
European Research Council
Australian Research Council
National Stroke Foundation
Capital Markets CRC Limited
Singapore Eye Research Institute
Helmholtz-Gemeinschaft
Deutsche Forschungsgemeinschaft
Agence Nationale de la Recherche
Japan Society for the Promotion of Science17K05464, 17KK0084
Japan Society for the Promotion of Science
Ministry of Education, Culture, Sports, Science and Technology
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung169025
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
Danmarks Grundforskningsfond
German-Israeli Foundation for Scientific Research and Development
Canada Foundation for Innovation
Fundação de Amparo à Pesquisa do Estado de São Paulo
National Natural Science Foundation of China
Fundação para a Ciência e a Tecnologia
Bundesministerium für Bildung und Forschung
Austrian Science Fund
Generalitat de Catalunya
Comisión Nacional de Investigación Científica y Tecnológica
Agencia Nacional de Promoción Científica y Tecnológica
Fonds Québécois de la Recherche sur la Nature et les Technologies
Ministerstvo Zdravotnictví Ceské Republiky
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Ministerio de Economía y Competitividad
Generalitat Valenciana
Bundesministerium für Wissenschaft, Forschung und Wirtschaft
General Secretariat for Research and Technology
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Ministry of Science and Technology
Joint Institute for Nuclear Research
Israel Science Foundation
Instituto Nazionale di Fisica Nucleare
Max-Planck-Gesellschaft
Narodowe Centrum Nauki
Javna Agencija za Raziskovalno Dejavnost RS
Narodowym Centrum Nauki
Ministerstwo Nauki i Szkolnictwa Wyższego
Ministerstvo Průmyslu a Obchodu
Seventh Framework Programme
Israeli Centers for Research Excellence
Ministry of Education and Science
Centre National pour la Recherche Scientifique et Technique
Bundesministerium für Bildung und Frauen
Thales Group
Horizon 2020
British Columbia Knowledge Development Fund
European Regional Development Fund
Consejo Nacional de Innovación, Ciencia y Tecnología
Fundació Catalana de Trasplantament
Helmholtz Association
Azərbaycan Respirator Cəmiyyəti
Marianne and Marcus Wallenberg Foundation
Fondation Partager le Savoir
National Research Center "Kurchatov Institute"
Ministry of Health of the Russian Federation

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