Journal article
Measurement of the top quark polarization and t ¯ t spin correlations using dilepton final states in proton-proton collisions at √ s = 13 TeV
Physical review D, Particles, fields, gravitation, and cosmology, Vol.100(7), 072002
10/08/2019
DOI: 10.1103/PhysRevD.100.072002
Abstract
Measurements of the top quark polarization and top quark pair (t¯t) spin correlations are presented using events containing two oppositely charged leptons (e+e−, e±μ∓, or μ+μ−) produced in proton-proton collisions at a center-of-mass energy of 13 TeV. The data were recorded by the CMS experiment at the LHC in 2016 and correspond to an integrated luminosity of 35.9 fb−1. A set of parton-level normalized differential cross sections, sensitive to each of the independent coefficients of the spin-dependent parts of the t¯t production density matrix, is measured for the first time at 13 TeV. The measured distributions and extracted coefficients are compared with standard model predictions from simulations at next-to-leading-order (NLO) accuracy in quantum chromodynamics (QCD), and from NLO QCD calculations including electroweak corrections. All measurements are found to be consistent with the expectations of the standard model. The normalized differential cross sections are used in fits to constrain the anomalous chromomagnetic and chromoelectric dipole moments of the top quark to −0.24<CtG/Λ2<0.07 TeV−2 and −0.33<CItG/Λ2<0.20 TeV−2, respectively, at the 95% confidence level.
Details
- Title: Subtitle
- Measurement of the top quark polarization and t ¯ t spin correlations using dilepton final states in proton-proton collisions at √ s = 13 TeV
- Creators
- CMS CollaborationA. M. Sirunyan - A. Alikhanyan National LaboratoryMaria Florencia CanelliBenjamin KilminsterThea K AarrestadDanyyl BrzhechkoLea CaminadaAnnapaoloa de CosaRiccardo Del BurgoSilvio DonatoCamilla GalloniTomas HreusStefanos LeontsinisVinicius Massami MikuniIzaak NeutelingsGiorgia RaucoPeter RobmannDaniel SalernoKorbinian SchweigerClaudia SeitzYuta TakahashiSebastien WertzAlberto Zucchetta
- Contributors
- M. Alhusseini (Contributor) - University of IowaB Bilki (Contributor) - University of Iowa, Physics and AstronomyW Clarida (Contributor) - University of IowaK Dilsiz (Contributor) - University of Iowa, Physics and AstronomyS. Durgut (Contributor) - University of IowaR. P. Gandrajula (Contributor) - University of IowaM. Haytmyradov (Contributor) - University of IowaV. Khristenko (Contributor) - University of IowaO K Koseyan (Contributor) - University of IowaJ-P Merlo (Contributor) - University of IowaA Mestvirishvili (Contributor) - University of Iowa, Physics and AstronomyA Moeller (Contributor) - University of IowaJ Nachtman (Contributor) - University of Iowa, Physics and AstronomyH Ogul (Contributor) - University of Iowa, Physics and AstronomyY Onel (Contributor) - University of Iowa, Physics and AstronomyF Ozok (Contributor) - University of IowaA Penzo (Contributor) - University of Iowa, Physics and AstronomyC. Snyder (Contributor) - University of IowaE Tiras (Contributor) - University of Iowa, Physics and AstronomyJ Wetzel (Contributor) - University of Iowa, Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- Physical review D, Particles, fields, gravitation, and cosmology, Vol.100(7), 072002
- DOI
- 10.1103/PhysRevD.100.072002
- ISSN
- 1550-7998
- eISSN
- 1550-2368
- Publisher
- American Physical Society
- Grant note
- DOI: 10.13039/501100010571, name: Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie; DOI: 10.13039/501100002428, name: Austrian Science Fund; DOI: 10.13039/501100002661, name: Fonds De La Recherche Scientifique - FNRS, award: Z181100004218003; DOI: 10.13039/501100003130, name: Fonds Wetenschappelijk Onderzoek; DOI: 10.13039/501100003593, name: Conselho Nacional de Desenvolvimento Científico e Tecnológico; DOI: 10.13039/501100002322, name: Coordenação de Aperfeiçoamento de Pessoal de Nível Superior; DOI: 10.13039/501100004586, name: Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro; DOI: 10.13039/501100004263, name: Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul; DOI: 10.13039/501100001807, name: Fundação de Amparo à Pesquisa do Estado de São Paulo; DOI: 10.13039/501100005992, name: Ministry of Education and Science; DOI: 10.13039/100012470, name: CERN; DOI: 10.13039/501100002367, name: Chinese Academy of Sciences; DOI: 10.13039/501100002855, name: Ministry of Science and Technology of the People’s Republic of China; 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DOI: 10.13039/501100008688, name: Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional; DOI: 10.13039/501100003141, name: Consejo Nacional de Ciencia y Tecnología; DOI: 10.13039/100010096, name: Secretaría de Educación Pública; DOI: 10.13039/501100005324, name: Universidad Autónoma de San Luis Potosí; DOI: 10.13039/501100003524, name: Ministry of Business, Innovation and Employment; DOI: 10.13039/501100008689, name: Pakistan Atomic Energy Commission; DOI: 10.13039/501100004569, name: Ministerstwo Nauki i Szkolnictwa Wyższego; DOI: 10.13039/501100004281, name: Narodowe Centrum Nauki; DOI: 10.13039/501100003822, name: Joint Institute for Nuclear Research; DOI: 10.13039/501100001871, name: Fundação para a Ciência e a Tecnologia; DOI: 10.13039/501100003443, name: Ministry of Education and Science of the Russian Federation, award: 3.2989.2017; DOI: 10.13039/501100008687, name: State Atomic Energy Corporation ROSATOM; DOI: 10.13039/501100002674, name: Russian Academy of Sciences; DOI: 10.13039/501100002261, name: Russian Foundation for Basic Research; DOI: 10.13039/501100004564, name: Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja; DOI: 10.13039/501100007136, name: Secretaría de Estado de Investigación, Desarrollo e Innovación; DOI: 10.13039/100011941, name: PCTI; DOI: 10.13039/501100003006, name: Eidgenössische Technische Hochschule Zürich; DOI: 10.13039/501100004219, name: Paul Scherrer Institut; DOI: 10.13039/501100001711, name: Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung; DOI: 10.13039/501100006447, name: Universität Zürich; DOI: 10.13039/501100004663, name: Ministry of Science and Technology, Taiwan; DOI: 10.13039/100012863, name: Thailand Center of Excellence in Physics; DOI: 10.13039/501100004192, name: National Science and Technology Development Agency; DOI: 10.13039/501100004410, name: Türkiye Bilimsel ve Teknolojik Araştirma Kurumu; DOI: 10.13039/100010440, name: Türkiye Atom Enerjisi Kurumu; DOI: 10.13039/501100004742, name: National Academy of Sciences of Ukraine; DOI: 10.13039/501100008690, name: State Fund for Fundamental Research of Ukraine; DOI: 10.13039/501100000271, name: Science and Technology Facilities Council; DOI: 10.13039/100000015, name: U.S. Department of Energy; DOI: 10.13039/100000001, name: National Science Foundation; DOI: 10.13039/100010663, name: H2020 European Research Council; DOI: 10.13039/100010661, name: Horizon 2020 Framework Programme, award: 675440, 752730, 765710; DOI: 10.13039/501100004117, name: A.G. Leventis Foundation; DOI: 10.13039/100000879, name: Alfred P. Sloan Foundation; DOI: 10.13039/100005156, name: Alexander von Humboldt-Stiftung; DOI: 10.13039/501100002749, name: Federaal Wetenschapsbeleid; DOI: 10.13039/501100003134, name: Fonds pour la Formation à la Recherche dans l’Industrie et dans l’Agriculture; DOI: 10.13039/501100003132, name: Agentschap voor Innovatie door Wetenschap en Technologie; DOI: 10.13039/501100009592, name: Beijing Municipal Science and Technology Commission; DOI: 10.13039/501100001823, name: Ministerstvo Školství, Mládeže a Tělovýchovy; DOI: 10.13039/501100003825, name: Magyar Tudományos Akadémia; DOI: 10.13039/501100001870, name: Fundacja na rzecz Nauki Polskiej; DOI: 10.13039/100008982, name: National Priorities Research Program by Qatar National Research Fund; DOI: 10.13039/501100004895, name: European Social Fund; DOI: 10.13039/501100002873, name: Chulalongkorn University; DOI: 10.13039/100000928, name: Welch Foundation, award: C-1845; DOI: 10.13039/100011223, name: Weston Havens Foundation; name: Finnish Ministry of Education and Culture; name: Helsinki Institute of Physics; DOI: 10.13039/501100012441, name: Institut National de Physique Nucléaire et de Physique des Particules; DOI: 10.13039/501100012550, name: National Research, Development and Innovation Fund; name: Laboratorio Nacional de Supercómputo del Sureste; name: Ministry of Science; name: National Research Center “Kurchatov Institute”; name: CPAN; name: Ministry of Science, Technology, and Research, Sri Lanka; name: ETH Board; name: Canton Zurich; name: SER; name: Institute for the Promotion of Teaching Science and Technology of Thailand; name: Special Task Force for Activating Research; name: Marie-Curie programme; name: New National Excellence Program ÚNKP; DOI: 10.13039/501100012550, name: NKFIA, award: 123842, 123959, 124845, 124850, 125105, 128713, 128786, 129058; name: Council of Science and Industrial Research; name: Programa Estatal de Fomento de la Investigación Científica y Técnica de Excelencia María de Maeztu, award: MDM-2015-0509; name: Programa Severo Ochoa del Principado de Asturias
- Language
- English
- Date published
- 10/08/2019
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984429027502771
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