Published February 2017 | Version Published + Submitted
Journal Article Open

Measurement of the production cross section of a W boson in association with two b jets in pp collisions at √s = 8 TeV

Abstract

The production cross section of a W boson in association with two b jets is measured using a sample of proton–proton collisions at √s = 8TeV collected by the CMS experiment at the CERN LHC. The data sample corresponds to an integrated luminosity of 19.8 fb^(-1). The W bosons are reconstructed via their leptonic decays, W → ℓν, where ℓ = μ or ee . The fiducial region studied contains exactly one lepton with transverse momentum p^ℓ_T > 30 GeV and pseudorapidity |η^ℓ|<2.1, with exactly two b jets with p_T > 25 GeV and |η|< 2.4 and no other jets with p_T > 25 GeV and |η|<4.7. The cross section is measured to be σ(pp → W (ℓν) + bb) = 0.64 ± 0.03(stat) ± 0.10(syst) ± 0.06 (theo) ± 0.02 (lumi) pb), in agreement with standard model predictions.

Additional Information

© 2017 Springer International Publishing AG. Open Access. 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: 26 August 2016. Accepted: 13 December 2016. Published online: 11 February 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 centers 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 and RFBR (Russia); MESTD (Serbia); SEIDI and CPAN (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 program 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 program of the Foundation for Polish Science, cofinanced from European Union, Regional Development Fund, the Mobility Plus program of the Ministry of Science and Higher Education, the National Science Center (Poland), contracts Harmonia 2014/14/M/ST2/00428, Opus 2013/11/B/ST2/04202, 2014/13/B/ST2/02543 and 2014/15/B/ST2/03998, Sonata-bis 2012/07/E/ST2/01406; the Thalis and Aristeia programs cofinanced by EU-ESF and the Greek NSRF; the National Priorities Research Program by Qatar National Research Fund; the Programa Clarín-COFUND del Principado de Asturias; 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.

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Additional details

Identifiers

Eprint ID
75663
Resolver ID
CaltechAUTHORS:20170404-072530276

Related works

Funding

SCOAP3
Bundesministerium für Wissenschaft, Forschung und Wirtschaft (BMWFW)
Austrian Science Fund (FWF)
Fonds de la Recherche Scientifique (FNRS)
Fonds Wetenschappelijk Onderzoek - Vlaanderen (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)
Secretaria de Educación Superior, Ciencia, Tecnología e Innovación (SENESCYT) Ecuador
Ministry of Education and Research (Estonia)
Estonian Research Council
European Regional Development Fund, Estonia
Academy of Finland
Ministry of Education and Culture (Finland)
Helsinki Institute of Physics
Commissariat à l'Énergie Atomique et aux Énergies Alternatives (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
Benemérita Universidad Autónoma de Puebla (BUAP)
CINVESTAV (Mexico)
CONACYT (Mexico)
SEP (Mexico)
UASLP-FAI (Mexico)
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 a Tecnologia (FCT)
Joint Institute for Nuclear Research (JINR)
Ministry of Education and Science of the Russian Federation
RosAtom
Russian Academy of Sciences
Russian Foundation for Basic Research
Ministry of Education, Science and Technological Development (Serbia)
State Secretariat for Research, Development and Innovation (SEIDI)
Centro Nacional de Física de Partículas, Astropartículas y Nuclear (CPAN)
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 of Ukraine
State Fund for Fundamental Researches (Ukraine)
Science and Technology Facilities Council (STFC)
Department of Energy (DOE)
NSF
Marie Curie Fellowship
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 (MEYS) of the Czech Republic
Council of Science and Industrial Research (India)
HOMING PLUS program of the Foundation for Polish Science
Ministry of Science and Higher Education (Poland)
National Science Center (Poland)
Harmonia Program
2014/14/M/ST2/00428
OPUS Program
2013/11/B/ST2/04202
OPUS Program
2014/13/B/ST2/02543
OPUS Program
2014/15/B/ST2/03998
Sonata-bis Program
2012/07/E/ST2/01406
Thalis programme
Aristeia programme
European Union European Social Fund
Greek National Strategic Reference Framework (NSRF)
Qatar National Research Fund National Priorities Research Program
Programa Clarín-COFUND del Principado de Asturias
Rachadapisek Sompot Fund for Postdoctoral Fellowship Chulalongkorn University (Thailand)
Chulalongkorn Academic into Its 2nd Century Project Advancement Project (Thailand)
Welch Foundation
C-1845
European Research Council (ERC)
EPLANET
European Regional Development Fund

Dates

Created
2017-04-04
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Updated
2021-11-15
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