期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 3, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP03(2019)026
关键词
Hadron-Hadron scattering (experiments); Higgs physics; Top physics
资金
- Austrian Federal Ministry of Science, Research and Economy
- Austrian Science Fund
- Belgian Fonds de la Recherche Scientifique
- Fonds voor Wetenschappelijk Onderzoek
- CNPq
- CAPES
- FAPERJ
- FAPESP
- Bulgarian Ministry of Education and Science
- CERN
- Chinese Academy of Sciences
- Ministry of Science and Technology
- National Natural Science Foundation of China
- Colombian Funding Agency (COLCIENCIAS)
- Croatian Ministry of Science, Education and Sport
- Croatian Science Foundation
- Research Promotion Foundation, Cyprus
- Secretariat for Higher Education, Science, Technology and Innovation, Ecuador
- Ministry of Education and Research, Estonia
- Estonian Research Council, Estonia [IUT23-4, IUT23-6]
- European Regional Development Fund, Estonia
- Academy of Finland
- Finnish Ministry of Education and Culture
- Helsinki Institute of Physics
- Institut National de Physique Nucleaire et de Physique des Particules/CNRS, France
- Commissariat a l'Energie Atomique et aux Energies Alternatives/CEA, France
- Bundesministerium fur Bildung und Forschung, Germany
- Deutsche Forschungsgemeinschaft, Germany
- Helmholtz-Gemeinschaft Deutscher Forschungszentren, Germany
- General Secretariat for Research and Technology, Greece
- National Research, Development and Innovation Fund, Hungary
- Department of Atomic Energy, India
- Department of Science and Technology, India
- Institute for Studies in Theoretical Physics and Mathematics, Iran
- Science Foundation, Ireland
- Istituto Nazionale di Fisica Nucleare, Italy
- Ministry of Science, ICT and Future Planning, Republic of Korea
- National Research Foundation (NRF), Republic of Korea
- Lithuanian Academy of Sciences
- Ministry of Education (Malaysia)
- University of Malaya (Malaysia)
- BUAP
- CINVESTAV
- CONACYT
- LNS
- SEP
- UASLP-FAI
- Ministry of Business, Innovation and Employment, New Zealand
- Pakistan Atomic Energy Commission
- Ministry of Science and Higher Education, Poland
- National Science Centre, Poland
- Fundacao para a Ciencia e a Tecnologia, Portugal
- JINR, Dubna
- Ministry of Education and Science of the Russian Federation
- Federal Agency of Atomic Energy of the Russian Federation
- Russian Academy of Sciences
- Russian Foundation for Basic Research
- Ministry of Education, Science and Technological Development of Serbia
- Secretaria de Estado de Investigacion, Desarrollo e Innovacion, Programa Consolider-Ingenio 2010, Plan Estatal de Investigacion Cientifica y Tecnica y de Innovacion 2013-2016, Plan de Ciencia, Tecnologia e Innovacion 2013-2017 del Principado de Asturias, S
- Fondo Europeo de Desarrollo Regional, Spain
- ETH Board
- ETH Zurich
- PSI
- SNF
- UniZH
- Canton Zurich
- SER
- Ministry of Science and Technology, Taipei
- Thailand Center of Excellence in Physics
- Institute for the Promotion of Teaching Science and Technology of Thailand
- Special Task Force for Activating Research
- National Science and Technology Development Agency of Thailand
- Scientific and Technical Research Council of Turkey
- Turkish Atomic Energy Authority
- National Academy of Sciences of Ukraine, Ukraine
- State Fund for Fundamental Researches, Ukraine
- Science and Technology Facilities Council, U. K.
- US Department of Energy
- US National Science Foundation
- Marie-Curie programme (European Union)
- European Research Council (European Union)
- Horizon 2020 Grant (European Union) [675440]
- Leventis Foundation
- A. P. Sloan Foundation
- Alexander von Humboldt Foundation
- Belgian Federal Science Policy Office
- Fonds pour la Formation a la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium)
- Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium)
- F.R.S.-FNRS (Belgium)
- FWO (Belgium) [30820817]
- Ministry of Education, Youth and Sports (MEYS) of the Czech Republic
- Hungarian Academy of Sciences (Hungary)
- New National Excellence Program UNKP (Hungary)
- NKFIA (Hungary) [123842, 123959, 124845, 124850, 125105]
- Council of Scientific and Industrial Research, India
- HOMING PLUS programme of the Foundation for Polish Science
- European Union, Regional Development Fund (Poland)
- Mobility Plus programme of the Ministry of Science and Higher Education (Poland)
- National Science Center (Poland) [Harmonia 2014/14/M/ST2/00428, Opus 2014/13/B/ST2/02543, 2014/15/B/ST2/03998, 2015/19/B/ST2/02861, Sonata-bis 2012/07/E/ST2/01406]
- National Priorities Research Program by Qatar National Research Fund
- Programa de Excelencia Mar a de Maeztu
- Programa Severo Ochoa del Principado de Asturias
- Thalis programme
- Aristeia programme
- EU-ESF
- Greek NSRF
- Rachadapisek Sompot Fund for Postdoctoral Fellowship, Chulalongkorn University (Thailand)
- Chulalongkorn Academic into Its 2nd Century Project Advancement Project (Thailand)
- Welch Foundation [C-1845]
- Weston Havens Foundation (U.S.A.)
- STFC [ST/N000242/1, ST/S000739/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/N000242/1] Funding Source: researchfish
A search is presented for the associated production of a standard model Higgs boson with a top quark-antiquark pair (ttH), in which the Higgs boson decays into a b quark-antiquark pair, in proton-proton collisions at a centre-of-mass energy =13 TeV. The data correspond to an integrated luminosity of 35.9 fb(-1) recorded with the CMS detector at the CERN LHC. Candidate ttH events are selected that contain either one or two electrons or muons from the t decays and are categorised according to the number of jets. Multivariate techniques are employed to further classify the events and eventually discriminate between signal and background. The results are characterised by an observed tH signal strength relative to the standard model cross section, = sigma/sigma(SM), under the assumption of a Higgs boson mass of 125 GeV. A combined fit of multivariate discriminant distributions in all categories results in an observed (expected) upper limit on of 1.5 (0.9) at 95% confidence level, and a best fit value of 0.72 +/- 0.24(stat) +/- 0.38(syst), corresponding to an observed (expected) signal significance of 1.6 (2.2) standard deviations above the background-only hypothesis.
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