期刊
JOURNAL OF INSTRUMENTATION
卷 13, 期 -, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1748-0221/13/05/P05011
关键词
Particle identification methods; Pattern recognition, cluster finding, calibration and fitting methods; Performance of High Energy Physics Detectors
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
- 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 Scientific Research Foundation, Hungary
- National Innovation Office, 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
- Russian Competitiveness Program of NRNU MEPhI
- Ministry of Education, Science and Technological Development of Serbia
- Secretaria de Estado de Investigacion, Desarrollo e Innovacion, Programa Consolider-Ingenio, Plan de Ciencia, Tecnologia e Innovacion del Principado de Asturias, Spain [20132017]
- 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
- State Fund for Fundamental Researches, Ukraine
- Science and Technology Facilities Council, UK
- US Department of Energy
- US National Science Foundation
- Marie-Curie programme
- European Research Council
- 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)
- Ministry of Education, Youth and Sports (MEYS) of the Czech Republic
- Council of Scientific and Industrial Research, India
- HOMING PLUS programme of the Foundation for Polish Science
- European Union, Regional Development Fund
- Ministry of Science and Higher Education
- 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]
- Qatar National Research Fund
- Programa Severo Ochoa del Principado de Asturias
- EU-ESF
- Greek NSRF
- Rachadapisek Sompot Fund for Postdoctoral Fellowship
- Chulalongkorn University
- Chulalongkorn Academic into Its 2nd Century Project Advancement Project (Thailand)
- Welch Foundation [C-1845]
- Weston Havens Foundation (USA)
- Ministry of Science and Technology
- STFC [ST/N000242/1] Funding Source: UKRI
- Direct For Mathematical & Physical Scien [1508869, 1606321] Funding Source: National Science Foundation
- Division Of Physics [1607262, 1151640] Funding Source: National Science Foundation
Many measurements and searches for physics beyond the standard model at the LHC rely on the efficient identification of heavy-flavour jets, i.e. jets originating from bottom or charm quarks. In this paper, the discriminating variables and the algorithms used for heavy-flavour jet identification during the first years of operation of the CMS experiment in proton-proton collisions at a centre-of-mass energy of 13 TeV, are presented. Heavy-flavour jet identification algorithms have been improved compared to those used previously at centre-of-mass energies of 7 and 8 TeV. For jets with transverse momenta in the range expected in simulated t (t) over bar events, these new developments result in an efficiency of 68% for the correct identification of a b jet for a probability of 1% of misidentifying a light-flavour jet. The improvement in relative efficiency at this misidentification probability is about 15%, compared to previous CMS algorithms. In addition, for the first time algorithms have been developed to identify jets containing two b hadrons in Lorentz-boosted event topologies, as well as to tag c jets. The large data sample recorded in 2016 at a centre-of-mass energy of 13 TeV has also allowed the development of new methods to measure the efficiency and misidentification probability of heavy-flavour jet identification algorithms. The b jet identification efficiency is measured with a precision of a few per cent at moderate jet transverse momenta (between 30 and 300 GeV) and about 5% at the highest jet transverse momenta (between 500 and 1000 GeV).
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