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Measurement of the ZZ production cross section and Z → ℓ^+ℓ^-ℓ'+ℓ'^- branching fraction in pp collisions at √s = 13 TeV

Khachatryan, V. and Anderson, D. and Apresyan, A. and Bendavid, J. and Bornheim, A. and Bunn, J. and Chen, Y. and Duarte, J. and Lawhorn, J. M. and Mott, A. and Newman, H. B. and Pena, C. and Spiropulu, M. and Vlimant, J. R. and Xie, S. and Zhu, R. Y. and Dubinin, M. (2016) Measurement of the ZZ production cross section and Z → ℓ^+ℓ^-ℓ'+ℓ'^- branching fraction in pp collisions at √s = 13 TeV. Physics Letters B, 763 . pp. 280-303. ISSN 0370-2693. http://resolver.caltech.edu/CaltechAUTHORS:20170324-100746925

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Abstract

Four-lepton production in proton–proton collisions, pp→(Z/γ^*)(Z/γ^*)→ℓ^+ℓ^−ℓ^(′+)ℓ^(′−), where ℓ,ℓ′=e or μ, is studied at a center-of-mass energy of 13 TeV with the CMS detector at the LHC. The data sample corresponds to an integrated luminosity of 2.6 fb^(−1). The ZZ production cross section, σ(pp → ZZ = 14.6^(+1.9)_(-1.8) (stat)^(+0.5)_(-0.3) (syst) ± 0.2(theo)± 0.4(lumi)pb, is measured for events with two opposite-sign, same-flavor lepton pairs produced in the mass region 60<m_ℓ^+_ℓ^−,m_ℓ^(′+)ℓ′−<120 GeV. The Z boson branching fraction to four leptons is measured to be B(Z → ℓ^+ℓ^-ℓ^('+ℓ)'-^ source for the four-lepton invariant mass in the range 80<mℓ_+ℓ_−ℓ^(′+ℓ)_ℓ^('−)<100 GeV and dilepton mass mℓ^+ℓ^−>4 GeV for all opposite-sign, same-flavor lepton pairs. The results are in agreement with standard model predictions.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/j.physletb.2016.10.054DOIArticle
http://www.sciencedirect.com/science/article/pii/S0370269316306256PublisherArticle
https://arxiv.org/abs/1607.08834arXivDiscussion Paper
ORCID:
AuthorORCID
Newman, H. B.0000-0003-0964-1480
Spiropulu, M.0000-0001-8172-7081
Xie, S.0000-0003-2509-5731
Zhu, R. Y.0000-0003-3091-7461
Additional Information:© 2016 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP³ - Sponsoring Consortium for Open Access Publishing in Particle Physics Under a Creative Commons license. Received 29 July 2016, Revised 9 October 2016, Accepted 21 October 2016, Available online 27 October 2016. Editor: M. Doser. We thank Massimiliano Grazzini and his collaborators for providing the NNLO cross section calculations. 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, ERCIUT 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.
Group:CMS@Caltech
Funders:
Funding AgencyGrant Number
SCOAP3UNSPECIFIED
Bundesministerium für Wissenschaft, Forschung und Wirtschaft (BMWFW)UNSPECIFIED
Austrian Science Fund (FWF)UNSPECIFIED
Fonds de la Recherche Scientifique (FNRS)UNSPECIFIED
Fonds Wetenschappelijk Onderzoek (FWO)UNSPECIFIED
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)UNSPECIFIED
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)UNSPECIFIED
Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)UNSPECIFIED
Fundação de Amparo à Pesquisa do Estado de Sao Paulo (FAPESP)UNSPECIFIED
Ministry of Education and Science (Bulgaria)UNSPECIFIED
CERNUNSPECIFIED
Chinese Academy of SciencesUNSPECIFIED
Ministry of Science and Technology (China)UNSPECIFIED
National Natural Science Foundation of ChinaUNSPECIFIED
COLCIENCIAS (Colombia)UNSPECIFIED
Croatian Ministry of Science, Education and Sport and the Croatian Science FoundationUNSPECIFIED
Research Promotion Foundation (Cyprus) UNSPECIFIED
SENESCYT (Ecuador)UNSPECIFIED
Ministry of Education and Research (Estonia)UNSPECIFIED
Estonian Research CouncilUNSPECIFIED
European Regional Development Fund, EstoniaUNSPECIFIED
Academy of FinlandUNSPECIFIED
Ministry of Education and Culture (Finland)UNSPECIFIED
Helsinki Institute of PhysicsUNSPECIFIED
Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)UNSPECIFIED
Centre National de la Recherche Scientifique (CNRS)UNSPECIFIED
Institut National de Physique Nucléaire et de Physique des Particules (IN2P3)UNSPECIFIED
Bundesministerium für Bildung und Forschung (BMBF)UNSPECIFIED
Deutsche Forschungsgemeinschaft (DFG)UNSPECIFIED
Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF)UNSPECIFIED
General Secretariat for Research and Technology (GSRT)UNSPECIFIED
Hungarian Scientific Research Fund (OTKA)UNSPECIFIED
National Innovation Office (Hungary)UNSPECIFIED
Department of Atomic Energy (India)UNSPECIFIED
Department of Science and Technology (India)UNSPECIFIED
Istituto Nazionale di Fisica Nucleare (INFN)UNSPECIFIED
Ministry of Science, ICT and Future Planning (Korea)UNSPECIFIED
National Research Foundation of Korea (NRF)UNSPECIFIED
Lithuanian Academy of SciencesUNSPECIFIED
Ministry of Education (Malaysia)UNSPECIFIED
University of MalayaUNSPECIFIED
Benemérita Universidad Autónoma de Puebla (BUAP)UNSPECIFIED
CINVESTAV (Mexico)UNSPECIFIED
CONACYT (Mexico)UNSPECIFIED
UASLP-FAI (Mexico)UNSPECIFIED
SEP (Mexico)UNSPECIFIED
Ministry of Business, Innovation and Employment (New Zealand)UNSPECIFIED
Atomic Energy Commission (Pakistan)UNSPECIFIED
Ministry of Science and Higher Education (Poland)UNSPECIFIED
National Science Centre (Poland)UNSPECIFIED
Fundação para a Ciência e a Tecnologia (FCT)UNSPECIFIED
Joint Institute for Nuclear Research (JINR)UNSPECIFIED
Ministry of Education and Science of the Russian FederationUNSPECIFIED
RosAtomUNSPECIFIED
Russian Academy of SciencesUNSPECIFIED
Russian Foundation for Basic ResearchUNSPECIFIED
Ministry of Education, Science and Technological Development (Serbia)UNSPECIFIED
State Secretariat for Research, Development and Innovation (SEIDI)UNSPECIFIED
Centro Nacional de Física de Partículas, Astropartículas y Nuclear (CPAN)UNSPECIFIED
Swiss Funding AgenciesUNSPECIFIED
Ministry of Science and Technology (Taipei)UNSPECIFIED
Thailand center of Excellence in PhysicsUNSPECIFIED
Institute for the Promotion of Teaching Science and Technology (Thailand)UNSPECIFIED
Special Task Force for Activating Research (Thailand)UNSPECIFIED
National Science and Technology Development Agency (Thailand)UNSPECIFIED
Türkiye Bilimsel ve Teknolojik Araştırma Kurumu (TÜBİTAK)UNSPECIFIED
Türkiye Atom Enerjisi Kurumu (TAEK)UNSPECIFIED
National Academy of Sciences of UkraineUNSPECIFIED
State Fund for Fundamental Researches (Ukraine)UNSPECIFIED
Science and Technology Facilities Council (STFC)UNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
NSFUNSPECIFIED
Marie Curie FellowshipUNSPECIFIED
Leventis FoundationUNSPECIFIED
Alfred P. Sloan FoundationUNSPECIFIED
Alexander von Humboldt FoundationUNSPECIFIED
Belgian Federal Science Policy Office (BELSPO)UNSPECIFIED
Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium)UNSPECIFIED
Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium)UNSPECIFIED
Ministry of Education, Youth and Sports (MEYS) of the Czech RepublicUNSPECIFIED
Council of Science and Industrial Research (India)UNSPECIFIED
Foundation for Polish Science HOMING PLUS programmeUNSPECIFIED
European Union Regional Development FundUNSPECIFIED
Ministry of Science and Higher Education (Poland)UNSPECIFIED
Contracts Harmonia2014/14/M/ST2/00428
OPUS programme2013/11/B/ST2/04202
OPUS programme2014/13/B/ST2/02543
OPUS programme2014/15/B/ST2/03998
Sonata-bis programme2012/07/E/ST2/01406
Thalis programmeUNSPECIFIED
Aristeia programmeUNSPECIFIED
European Union European Social FundUNSPECIFIED
Greek National Strategic Reference Framework (NSRF)UNSPECIFIED
Qatar National Research Fund National Priorities Research ProgramUNSPECIFIED
Programa Clarín-COFUND del Principado de AsturiasUNSPECIFIED
Rachadapisek Sompot Fund for Postdoctoral Fellowship Chulalongkorn University (Thailand)UNSPECIFIED
Chulalongkorn Academic into Its 2nd Century Project Advancement Project (Thailand)UNSPECIFIED
Welch FoundationC-1845
European Research Council (ERC)UNSPECIFIED
EPLANETUNSPECIFIED
Subject Keywords:CMS; Physics; Electroweak
Record Number:CaltechAUTHORS:20170324-100746925
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20170324-100746925
Official Citation:Measurement of the ZZ production cross section and Z → ℓ+ℓ−ℓ′+ℓ′− branching fraction in pp collisions at, Physics Letters B, Volume 763, 10 December 2016, Pages 280-303, ISSN 0370-2693, http://dx.doi.org/10.1016/j.physletb.2016.10.054. (http://www.sciencedirect.com/science/article/pii/S0370269316306256)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:75385
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:24 Mar 2017 19:13
Last Modified:24 Mar 2017 19:13

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