Published May 29, 2017
| Submitted + Published
Journal Article
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Measurement of the top quark mass using single top quark events in proton-proton collisions at √s = 8 TeV
Chicago
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Abstract
A measurement of the top quark mass is reported in events containing a single top quark produced via the electroweak t channel. The analysis is performed using data from proton-proton collisions collected with the CMS detector at the LHC at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 19.7 fb^(−1). Top quark candidates are reconstructed from their decay to a W boson and a b quark, with the W boson decaying leptonically to a muon and a neutrino. The final state signature and kinematic properties of single top quark events in the t channel are used to enhance the purity of the sample, suppressing the contribution from top quark pair production. Afit to the invariant mass distribution of reconstructed top quark candidates yields a value of the top quark mass of 172.95 ± 0.77 (stat)^(+0.97)_(−0.93) (syst) GeV. This result is in agreement with the current world average, and represents the first measurement of the top quark mass in event topologies not dominated by top quark pair production, therefore contributing to future averages with partially uncorrelated systematic uncertainties and a largely uncorrelated statistical uncertainty.
Additional Information
© CERN for the benefit of the CMS collaboration 2017. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Funded by SCOAP3. Received 7 March 2017; accepted 11 May 2017; published online 29 May 2017. We 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. Finally, we acknowledge the enduring support for the construction and operation of the LHC and the CMS detector provided by the following funding agencies: BMWFW and FWF (Austria); FNRS and FWO(Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES and CSF (Croatia); RPF (Cyprus); SENESCYT (Ecuador); MoER, ERC IUT, and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NIH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); LAS (Lithuania); MOE and UM(Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MBIE (New Zealand); PAEC(Pakistan);MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS, RFBR and RAEP (Russia); MESTD (Serbia); SEIDI, CPAN, PCTI and FEDER (Spain); Swiss Funding Agencies (Switzerland); MST (Taipei); ThEPCenter, IPST, STAR, and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU and SFFR (Ukraine); STFC (United Kingdom); DOE and NSF (USA). Individuals have received support from the Marie-Curie programme and the European Research Council and EPLANET (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 à 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 Science 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 Clarín-COFUND 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); and the Welch Foundation, contract C-1845. This work is dedicated to the memory of Maurizio Lo Vetere (1965–2015), our fellow colleague at the University of Genoa and INFN, Italy. Maurizio's main contributions to this paper include the setup of the event selection to suppress tt events and the signal extraction method.Attached Files
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Submitted - 1703.02530.pdf
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Additional details
- PMCID
- PMC5586548
- Eprint ID
- 82297
- Resolver ID
- CaltechAUTHORS:20171011-154928078
- Bundesministerium für Wissenschaft, Forschung Und Wirtschaft (BMWFW)
- Fonds Zur Förderung der Wissenschaftlichen Forschung (FWF)
- Fonds de la Recherche Scientifique (FNRS)
- Fonds Wetenschappelijk Onderzoek (FWO)
- Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
- Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
- Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)
- Fundação de Amparo à Pesquisa do Estado de Sao Paulo (FAPESP)
- Ministry of Education and Science (Bulgaria)
- CERN
- Chinese Academy of Sciences
- Ministry of Science and Technology (China)
- National Natural Science Foundation of China
- Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS)
- Ministry of Science, Education and Sport (Croatia)
- Croatian Science Foundation
- Research Promotion Foundation (Cyprus)
- Secretaría Nacional de Educación Superior, Ciencia, Tecnología e Innovación (SENESCYT)
- Ministry of Education and Research (Estonia)
- Estonian Research Council
- IUT23-4
- European Regional Development Fund (Estonia)
- Academy of Finland
- Ministry of Education and Culture (Finland)
- Helsinki Institute of Physics
- Commissariat à l'énergie atomique (CEA)
- Centre National de la Recherche Scientifique (CNRS)
- Institut National de Physique Nucléaire et de Physique des Particules (IN2P3)
- Bundesministerium für Bildung und Forschung (BMBF)
- Deutsche Forschungsgemeinschaft (DFG)
- Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF)
- General Secretariat for Research and Technology (GSRT)
- Hungarian Scientific Research Fund (OTKA)
- 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 (INFN)
- Ministry of Science, ICT and Future Planning (Korea)
- National Research Foundation of Korea
- Lithuanian Academy of Sciences
- Ministry of Education (Malaysia)
- University of Malaya
- enemérita Universidad Autónoma de Puebla (BUAP)
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV)
- Consejo Nacional de Ciencia y Tecnología (CONACYT)
- Laboratorio Nacional de Supercómputo (LNS)
- Secretaría de Educación Pública (SEP)
- Universidad Autónoma de San Luis Potosí Inicio-Facultad de Ingeniería (UASLP-FAI)
- Ministry of Business, Innovation and Employment (New Zealand)
- Atomic Energy Commission (Pakistan)
- Ministry of Science and Higher Education (Poland)
- National Science Centre (Poland)
- Fundação para a Ciência e Tecnologia (FCT)
- Joint Institute for Nuclear Research (JINR)
- Russian Ministry of Education and Sciences (MON)
- RosAtom
- Russian Academy of Sciences
- Russian Foundation for Basic Research
- Russian Academic Excellence Project (RAEP)
- Ministry of Education, Science and Technological Development (Serbia)
- Secretaría de Estado de Investigación, Desarrollo e Innovación (SEIDI)
- Centro Nacional de Física de Partículas, Astropartículas y Nuclear (CPAN)
- Plan de Ciencia, Tecnología e Innovació (PCTI)
- Fondo Europeo de Desarrollo Regional (FEDER)
- Swiss Funding Agencies
- Ministry of Science and Technology (Taipei)
- Thailand Center of Excellence in Physics
- Institute for the Promotion of Teaching Science and Technology (Thailand)
- Special Task Force for Activating Research (Thailand)
- National Science and Technology Development Agency (Thailand)
- Türkiye Bilimsel ve Teknolojik Araştırma Kurumu (TÜBİTAK)
- Türkiye Atom Enerjisi Kurumu (TAEK)
- National Academy of Sciences (Ukraine)
- State Fund for Fundamental Research (Ukraine)
- Science and Technology Facilities Council (STFC)
- Department of Energy (DOE)
- NSF
- Marie Curie Fellowship
- European Research Council (ERC)
- EPLANET
- Leventis Foundation
- Alfred P. Sloan Foundation
- Alexander von Humboldt Foundation
- Belgian Federal Science Policy Office (BELSPO)
- Fonds pour la Formation à 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 (Czech Republic)
- Council of Science and Industrial Research (India)
- Foundation for Polish Science HOMING PLUS Program
- European Union Regional Development Fund
- Mobility Plus Program
- Harmonia Program
- 2014/14/M/ST2/00428
- OPUS Program
- 2014/13/B/ST2/02543
- OPUS Program
- 2014/15/B/ST2/03998
- OPUS Program
- 2015/19/B/ST2/02861
- Sonatabis Program
- 2012/07/E/ST2/01406
- Thalis Program
- Aristeia Program
- European Social Fund (EU-ESF)
- Greek National Strategic Reference Framework (NSRF)
- Qatar National Research Fund National Priorities Research Program
- Programa Clarín-COFUND del Principado de Asturias
- Rachadapisek Sompot Fund
- Chulalongkorn Academic into Its 2nd Century Project Advancement Project (Thailand)
- Robert A. Welch Foundation
- C-1845
- SCOAP3
- Created
-
2017-10-12Created from EPrint's datestamp field
- Updated
-
2021-11-15Created from EPrint's last_modified field
- Caltech groups
- CMS@Caltech