Identification of heavy-flavour jets with the CMS detector in pp collisions at 13 TeV

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dc.contributor.authorSirunyan, A. M.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorAmbrogi, F.
dc.contributor.authorAsilar, E.
dc.contributor.authorBergauer, T.
dc.contributor.authorBrandstetter, J.
dc.date.accessioned2024-03-13T10:35:31Z
dc.date.available2024-03-13T10:35:31Z
dc.date.issued2018
dc.departmentİstanbul Beykent Üniversitesien_US
dc.description.abstractMany 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).en_US
dc.description.sponsorshipAustrian 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; Division Of Physics [1606321] Funding Source: National Science Foundation; Division Of Physics; Direct For Mathematical & Physical Scien [1151640, 1508869, 1607262] Funding Source: National Science Foundationen_US
dc.description.sponsorshipWe congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC and thank the technical and administrative staffs at CERN and at other CMS institutes for their contributions to the success of the CMS effort. In addition, we gratefully acknowledge the computing centres and personnel of the Worldwide LHC Computing Grid for delivering so effectively the computing infrastructure essential to our analyses.; r r Finally, we acknowledge the enduring support for the construction and operation of the LHC and the CMS detector provided by the following funding agencies: the Austrian Federal Ministry of Science, Research and Economy and the Austrian Science Fund; the Belgian Fonds de la Recherche Scientifique, and Fonds voor Wetenschappelijk Onderzoek; the Brazilian Funding Agencies (CNPq, CAPES, FAPERJ, and FAPESP); the Bulgarian Ministry of Education and Science; CERN; the Chinese Academy of Sciences, Ministry of Science and Technology, and National Natural Science Foundation of China; the Colombian Funding Agency (COLCIENCIAS); the Croatian Ministry of Science, Education and Sport, and the Croatian Science Foundation; the Research Promotion Foundation, Cyprus; the Secretariat for Higher Education, Science, Technology and Innovation, Ecuador; the Ministry of Education and Research, Estonian Research Council via IUT23-4 and IUT23-6 and European Regional Development Fund, Estonia; the Academy of Finland, Finnish Ministry of Education and Culture, and Helsinki Institute of Physics; the Institut National de Physique Nucleaire et de Physique des Particules / CNRS, and Commissariat a l'Energie Atomique et aux Energies Alternatives / CEA, France; the Bundesministerium fur Bildung und Forschung, Deutsche Forschungsgemeinschaft, and Helmholtz-Gemeinschaft Deutscher Forschungszentren, Germany; the General Secretariat for Research and Technology, Greece; the National Scientific Research Foundation, and National Innovation Office, Hungary; the Department of Atomic Energy and the Department of Science and Technology, India; the Institute for Studies in Theoretical Physics and Mathematics, Iran; the Science Foundation, Ireland; the Istituto Nazionale di Fisica Nucleare, Italy; the Ministry of Science, ICT and Future Planning, and National Research Foundation (NRF), Republic of Korea; the Lithuanian Academy of Sciences; the Ministry of Education, and University of Malaya (Malaysia); the Mexican Funding Agencies (BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI); the Ministry of Business, Innovation and Employment, New Zealand; the Pakistan Atomic Energy Commission; the Ministry of Science and Higher Education and the National Science Centre, Poland; the Fundacao para a Ciencia e a Tecnologia, Portugal; JINR, Dubna; the Ministry of Education and Science of the Russian Federation, the Federal Agency of Atomic Energy of the Russian Federation, Russian Academy of Sciences, the Russian Foundation for Basic Research and the Russian Competitiveness Program of NRNU MEPhI; the Ministry of Education, Science and Technological Development of Serbia; the Secretaria de Estado de Investigacion, Desarrollo e Innovacion, Programa Consolider-Ingenio 2010, Plan de Ciencia, Tecnologia e Innovacion 20132017 del Principado de Asturias and Fondo Europeo de Desarrollo Regional, Spain; the Swiss Funding Agencies (ETH Board, ETH Zurich, PSI, SNF, UniZH, Canton Zurich, and SER); the Ministry of Science and Technology, Taipei; the Thailand Center of Excellence in Physics, the Institute for the Promotion of Teaching Science and Technology of Thailand, Special Task Force for Activating Research and the National Science and Technology Development Agency of Thailand; the Scientific and Technical Research Council of Turkey, and Turkish Atomic Energy Authority; the National Academy of Sciences of Ukraine, and State Fund for Fundamental Researches, Ukraine; the Science and Technology Facilities Council, UK; the US Department of Energy, and the US National Science Foundation.; r r Individuals have received support from the Marie-Curie programme and the European Research Council and Horizon 2020 Grant, contract No. 675440 (European Union); the Leventis Foundation; the A. P. Sloan Foundation; the Alexander von Humboldt Foundation; the Belgian Federal Science Policy Office; the Fonds pour la Formation a la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium); the Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium); the Ministry of Education, Youth and Sports (MEYS) of the Czech Republic; the Council of Scientific and Industrial Research, India; the HOMING PLUS programme of the Foundation for Polish Science, cofinanced from European Union, Regional Development Fund, the Mobility Plus programme of the Ministry of Science and Higher Education, the National Science Center (Poland), contracts Harmonia 2014/14/M/ST2/00428, Opus 2014/13/B/ST2/02543, 2014/15/B/ST2/03998, and 2015/19/B/ST2/02861, Sonata-bis 2012/07/E/ST2/01406; the National Priorities Research Program by Qatar National Research Fund; the Programa Severo Ochoa del Principado de Asturias; the Thalis and Aristeia programmes cofinanced by EU-ESF and the Greek NSRF; the Rachadapisek Sompot Fund for Postdoctoral Fellowship, Chulalongkorn University and the Chulalongkorn Academic into Its 2nd Century Project Advancement Project (Thailand); the Welch Foundation, contract C-1845; and the Weston Havens Foundation (USA).en_US
dc.identifier.doi10.1088/1748-0221/13/05/P05011
dc.identifier.issn1748-0221
dc.identifier.urihttps://doi.org/10.1088/1748-0221/13/05/P05011
dc.identifier.urihttps://hdl.handle.net/20.500.12662/4460
dc.identifier.volume13en_US
dc.identifier.wosWOS:000431716900005en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.language.isoenen_US
dc.publisherIop Publishing Ltden_US
dc.relation.ispartofJournal Of Instrumentationen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectParticle identification methodsen_US
dc.subjectPattern recognition, cluster finding, calibration and fitting methodsen_US
dc.subjectPerformance of High Energy Physics Detectorsen_US
dc.titleIdentification of heavy-flavour jets with the CMS detector in pp collisions at 13 TeVen_US
dc.typeArticleen_US

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