Search for Higgs boson decays into a pair of light bosons in the bbμμ final state in pp collision at √s=13TeV with the ATLAS detector

The ATLAS collaboration

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51 Scopus citations

Abstract

A search for decays of the Higgs boson into a pair of new spin-zero particles, H→aa, where the a-bosons decay into a b-quark pair and a muon pair, is presented. The search uses 36.1 fb−1 of proton–proton collision data at s=13 TeV recorded by the ATLAS experiment at the LHC in 2015 and 2016. No significant deviation from the Standard Model prediction is observed. Upper limits at 95% confidence level are placed on the branching ratio (σHSM)×B(H→aa→bbμμ), ranging from 1.2×10−4 to 8.4×10−4 in the a-boson mass range of 20–60 GeV. Model-independent limits are set on the visible production cross-section times the branching ratio to the bbμμ final state for new physics, σvis(X)×B(X→bbμμ), ranging from 0.1 fb to 0.73 fb for mμμ between 18 and 62 GeV.

Original languageEnglish
Pages (from-to)1-21
Number of pages21
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume790
DOIs
StatePublished - 10 Mar 2019

Funding

FundersFunder number
Not addedST/J005533/1, ST/L006162/1, ST/N000447/1, ST/J004804/1, ST/N000463/1, ST/L003449/1, ST/H001158/2, ST/K001329/1, ST/N000420/1
CEA-DRF
Cantons of Bern and Geneva
Czech Republic
DNSRCIN2P3-CNRS
EU-ESF
IRFU
MES of Russia
MESTD
MIZŠ
MNE
MSMT
MSSR
RGC
Région Auvergne
VSC CR
Wallenberg Foundation
National Science Foundation1812377
National Science Foundation
U.S. Department of Energy
Biomedical Research Foundation of Northwest Louisiana
Alexander von Humboldt-Stiftung
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
Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS)
Cummings Foundation
Ontario Innovation Trust
Canarie
Poultry Industry Council
Türkiye Atom Enerjisi Kurumu
H2020 European Research Council
H2020 Marie Skłodowska-Curie Actions
Biomedical Research Foundation
Arizona-Nevada Academy of Science
Brain Science Foundation
TRIUMF
CERN
University of Washington College of Arts and Sciences
Iowa Science Foundation
Northern Ireland Community Relations Council
Compute Canada
National Research Council
Glycemic Index Foundation
Natural Sciences and Engineering Research Council of Canada
National Research Council Canada
Canada Council for the Arts
Canada Foundation for Innovation
Science and Technology Facilities CouncilST/M000753/1, ST/N000307/1, GRIDPP
Science and Technology Facilities Council
Leverhulme Trust
Royal Society
European Research Council
Australian Research Council
Neurosurgical Research Foundation
Department of Science and Technology, Ministry of Science and Technology, India
Singapore Eye Research Institute
Helmholtz-Gemeinschaft
Minerva Foundation
Deutsche Forschungsgemeinschaft
Agence Nationale de la Recherche
Japan Society for the Promotion of Science
Ministry of Education, Culture, Sports, Science and Technology
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
Danmarks Grundforskningsfond
German-Israeli Foundation for Scientific Research and Development
United States-Israel Binational Science Foundation
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
Chinese Academy of Sciences
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
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
Joint Institute for Nuclear Research
Nella and Leon Benoziyo Center for Neurological Diseases, Weizmann Institute of Science
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
Ministry of Science and Technology, Taiwan
Seventh Framework Programme
Ministry of Education and Science
Centre National pour la Recherche Scientifique et Technique
Bundesministerium für Bildung und Frauen
Horizon 2020
British Columbia Knowledge Development Fund
European Regional Development Fund
National Science Foundation
Consejo Nacional de Innovación, Ciencia y Tecnología
Fundació Catalana de Trasplantament
Helmholtz Association
Azərbaycan Respirator Cəmiyyəti
Council on grants of the President of the Russian Federation
Services Fédéraux des Affaires Scientifiques, Techniques et Culturelles
Fondation Partager le Savoir
National Research Center "Kurchatov Institute"
Institutul de Fizică Atomică

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