Search for the Standard Model Higgs boson produced in association with a vector boson and decaying to a b-quark pair with the ATLAS detector

ATLAS Collaboration

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Abstract

This Letter presents the results of a direct search with the ATLAS detector at the LHC for a Standard Model Higgs boson of mass 110⩽mH⩽130 GeV produced in association with a W or Z boson and decaying to bb¯. Three decay channels are considered: ZH→ℓ+bb¯ WH→ℓνbb¯ and ZH→νν¯bb¯ where ℓ corresponds to an electron or a muon. No evidence for Higgs boson production is observed in a dataset of 7 TeV pp collisions corresponding to 4.7 fb−1 of integrated luminosity collected by ATLAS in 2011. Exclusion limits on Higgs boson production, at the 95% confidence level, of 2.5 to 5.5 times the Standard Model cross section are obtained in the mass range 110–130 GeV. The expected exclusion limits range between 2.5 and 4.9 for the same mass interval.

Original languageEnglish
Pages (from-to)369-390
Number of pages22
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume718
Issue number2
DOIs
StatePublished - 5 Dec 2012

Funding

FundersFunder number
CEA-DSM
Cantons of Bern and Geneva
Czech Republic
DIP
DNSRC
GNAS
IRFU
MECTS
MERYS
MES of Russia
MSMT
MSSR
MSTD
MVZT
VSC CR
Wallenberg Foundation
National Science Foundation1119200
National Science Foundation
U.S. Department of Energy
Healthcare Georgia Foundation
Alexander von Humboldt-Stiftung
Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS)
School of Energy Resources, University of Wyoming
Türkiye Atom Enerjisi Kurumu
Seventh Framework Programme246806
Seventh Framework Programme
Arizona-Nevada Academy of Science
CERN
National Research Council
Engineering Research Centers
Natural Sciences and Engineering Research Council of Canada
Canada Foundation for Innovation
Science and Technology Facilities CouncilPP/E002757/1, ST/F007337/1, ST/I003142/1, ST/I005803/1, ST/J004944/1, PP/E000347/1, ST/H001069/2, ST/K501840/1, ST/L001195/1, ST/H001026/1, ST/H001042/1, ST/I006080/1, ST/H001042/2, ST/I000186/1, ST/J004928/1, ST/K001361/1, ST/I003517/1, GRIDPP, ST/G502320/1, ST/K001310/1, ST/K001337/1, ST/H00100X/1, ST/L001144/1, ST/J002798/1, ST/K00073X/1, ST/H00100X/2, ST/K000705/1, ST/K001248/1, ST/I005811/1, ST/M000761/1, PP/E003087/1, ST/J005460/1, PP/E000355/1, ST/H001093/2, ST/M001431/1, ST/K001418/1, ST/K00140X/1, ST/M001474/1, ST/H001093/1, ST/I003525/1, ST/M001512/1, PP/E003699/2, ST/H001026/2, PP/E003699/1, ST/J005576/1
Science and Technology Facilities Council
Leverhulme Trust
Royal Society
European CommissionIN2P3-CNRS
European Commission
Australian Research Council
Department of Science and Technology, Ministry of Science and Technology, India
Minerva Foundation
Deutsche Forschungsgemeinschaft
Japan Society for the Promotion of Science23340070
Japan Society for the Promotion of Science
Ministry of Education, Culture, Sports, Science and Technology
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
Stichting voor Fundamenteel Onderzoek der Materie
Danmarks Grundforskningsfond
German-Israeli Foundation for Scientific Research and Development
Fundação de Amparo à Pesquisa do Estado de São Paulo
National Natural Science Foundation of China
National Science Council
Fundação para a Ciência e a Tecnologia
Bundesministerium für Bildung und Forschung
Chinese Academy of Sciences
Comisión Nacional de Investigación Científica y Tecnológica
Agencia Nacional de Promoción Científica y Tecnológica
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
General Secretariat for Research and Technology
Lundbeckfonden
Conselho Nacional de Desenvolvimento Científico e Tecnológico
National Research Foundation of Korea
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
Javna Agencija za Raziskovalno Dejavnost RS
Ministerstwo Nauki i Szkolnictwa Wyższego
Ministry of Science and Technology, Taiwan
Ministerio de Ciencia e Innovación
Centre National pour la Recherche Scientifique et Technique
Bundesministerium für Wissenschaft und Forschung
State Atomic Energy Corporation ROSATOM
Council on grants of the President of the Russian Federation

    Keywords

    • ATLAS
    • LHC
    • Standard Model Higgs boson

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