• This record comes from PubMed

Search for new physics in top quark production in dilepton final states in proton-proton collisions at s = 13 TeV

. 2019 ; 79 (11) : 886. [epub] 20191101

Status PubMed-not-MEDLINE Language English Country France Media print-electronic

Document type Journal Article

A search for new physics in top quark production is performed in proton-proton collisions at 13 TeV . The data set corresponds to an integrated luminosity of 35.9 fb - 1 collected in 2016 with the CMS detector. Events with two opposite-sign isolated leptons (electrons or muons), and b quark jets in the final state are selected. The search is sensitive to new physics in top quark pair production and in single top quark production in association with a W boson. No significant deviation from the standard model expectation is observed. Results are interpreted in the framework of effective field theory and constraints on the relevant effective couplings are set, one at a time, using a dedicated multivariate analysis. This analysis differs from previous searches for new physics in the top quark sector by explicitly separating t W from t t ¯ events and exploiting the specific sensitivity of the t W process to new physics.

1 Physikalisches Institut RWTH Aachen University Aachen Germany

3 Physikalisches Institut A RWTH Aachen University Aachen Germany

3 Physikalisches Institut B RWTH Aachen University Aachen Germany

Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo Egypt

Baylor University Waco USA

Beihang University Beijing China

Benemerita Universidad Autonoma de Puebla Puebla Mexico

Bhabha Atomic Research Centre Mumbai India

Bogazici University Istanbul Turkey

Boston University Boston USA

Brown University Providence USA

Brunel University Uxbridge United Kingdom

California Institute of Technology Pasadena USA

Carnegie Mellon University Pittsburgh USA

Catholic University of America Washington DC USA

Centre de Calcul de l'Institut National de Physique Nucleaire et de Physique des Particules CNRS IN2P3 Villeurbanne France

Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil

Centro de Investigacion y de Estudios Avanzados del IPN Mexico City Mexico

Centro de Investigaciones Energéticas Medioambientales y Tecnológicas Madrid Spain

CERN European Organization for Nuclear Research Geneva Switzerland

Charles University Prague Czech Republic

Cornell University Ithaca USA

Department of Physics Faculty of Science Chulalongkorn University Bangkok Thailand

Department of Physics University of California Santa Barbara Santa Barbara USA

Department of Physics University of Helsinki Helsinki Finland

Department of Physics University of Ruhuna Matara Sri Lanka

Deutsches Elektronen Synchrotron Hamburg Germany

Escuela Politecnica Nacional Quito Ecuador

ETH Zurich Institute for Particle Physics and Astrophysics Zurich Switzerland

Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture University of Split Split Croatia

Faculty of Physics and VINCA Institute of Nuclear Sciences University of Belgrade Belgrade Serbia

Faculty of Science University of Split Split Croatia

Fermi National Accelerator Laboratory Batavia USA

Florida Institute of Technology Melbourne USA

Florida International University Miami USA

Florida State University Tallahassee USA

Georgian Technical University Tbilisi Georgia

Ghent University Ghent Belgium

Hanyang University Seoul Korea

Helsinki Institute of Physics Helsinki Finland

Imperial College London United Kingdom

Indian Institute of Science Bangalore India

Indian Institute of Science Education and Research Pune India

Indian Institute of Technology Madras Madras India

INFN Laboratori Nazionali di Frascati Frascati Italy

INFN Sezione di Bari Università di Bari Politecnico di Bari Bari Italy

INFN Sezione di Bologna Università di Bologna Bologna Italy

INFN Sezione di Catania Università di Catania Catania Italy

INFN Sezione di Firenze Università di Firenze Florence Italy

INFN Sezione di Genova Università di Genova Genoa Italy

INFN Sezione di Milano Bicocca Università di Milano Bicocca Milan Italy

INFN Sezione di Napoli Università di Napoli 'Federico II' Naples Italy Università della Basilicata Potenza Italy Università G Marconi Rome Italy

INFN Sezione di Padova Università di Padova Padova Italy Università di Trento Trento Italy

INFN Sezione di Pavia Università di Pavia Pavia Italy

INFN Sezione di Perugia Università di Perugia Perugia Italy

INFN Sezione di Pisa Università di Pisa Scuola Normale Superiore di Pisa Pisa Italy

INFN Sezione di Roma Sapienza Università di Roma Rome Italy

INFN Sezione di Torino Università di Torino Torino Italy Università del Piemonte Orientale Novara Italy

INFN Sezione di Trieste Università di Trieste Trieste Italy

Institut für Hochenergiephysik Vienna Austria

Institute for High Energy Physics of National Research Centre 'Kurchatov Institute' Protvino Russia

Institute for Nuclear Problems Minsk Belarus

Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria

Institute for Nuclear Research Moscow Russia

Institute for Research in Fundamental Sciences Tehran Iran

Institute for Scintillation Materials of National Academy of Science of Ukraine Kharkov Ukraine

Institute for Theoretical and Experimental Physics Moscow Russia

Institute for Universe and Elementary Particles Chonnam National University Kwangju Korea

Institute of Experimental Physics Faculty of Physics University of Warsaw Warsaw Poland

Institute of High Energy Physics Beijing China

Institute of Nuclear and Particle Physics NCSR Demokritos Aghia Paraskevi Greece

Institute of Nuclear Research ATOMKI Debrecen Hungary

Institute of Physics University of Debrecen Debrecen Hungary

Institute Rudjer Boskovic Zagreb Croatia

Instituto de Física de Cantabria CSIC Universidad de Cantabria Santander Spain

IRFU CEA Université Paris Saclay Gif sur Yvette France

Istanbul Technical University Istanbul Turkey

Johns Hopkins University Baltimore USA

Joint Institute for Nuclear Research Dubna Russia

Kansas State University Manhattan USA

Karlsruher Institut fuer Technologie Karlsruhe Germany

Korea University Seoul Korea

Kyungpook National University Daegu Korea

Laboratoire Leprince Ringuet Ecole polytechnique CNRS IN2P3 Université Paris Saclay Palaiseau France

Laboratório de Instrumentação e Física Experimental de Partículas Lisbon Portugal

Lappeenranta University of Technology Lappeenranta Finland

Lawrence Livermore National Laboratory Livermore USA

Massachusetts Institute of Technology Cambridge USA

Moscow Institute of Physics and Technology Moscow Russia

MTA ELTE Lendület CMS Particle and Nuclear Physics Group Eötvös Loránd University Budapest Hungary

National and Kapodistrian University of Athens Athens Greece

National Central University Chung Li Taiwan

National Centre for Nuclear Research Swierk Poland

National Centre for Particle Physics Universiti Malaya Kuala Lumpur Malaysia

National Centre for Physics Quaid 1 Azam University Islamabad Pakistan

National Institute of Chemical Physics and Biophysics Tallinn Estonia

National Institute of Science Education and Research HBNI Bhubaneswar India

National Research Nuclear University 'Moscow Engineering Physics Institute' Moscow Russia

National Research Tomsk Polytechnic University Tomsk Russia

National Scientific Center Kharkov Institute of Physics and Technology Kharkov Ukraine

National Taiwan University Taipei Taiwan

National Technical University of Athens Athens Greece

Northeastern University Boston USA

Northwestern University Evanston USA

Novosibirsk State University Novosibirsk Russia

P N Lebedev Physical Institute Moscow Russia

Panjab University Chandigarh India

Paul Scherrer Institut Villigen Switzerland

Petersburg Nuclear Physics Institute Gatchina Russia

Physics Department Middle East Technical University Ankara Turkey

Physics Department Science and Art Faculty Çukurova University Adana Turkey

Princeton University Princeton USA

Purdue University Northwest Hammond USA

Purdue University West Lafayette USA

Rice University Houston USA

Riga Technical University Riga Latvia

Rutgers The State University of New Jersey Piscataway USA

Rutherford Appleton Laboratory Didcot United Kingdom

Saha Institute of Nuclear Physics HBNI Kolkata India

Sejong University Seoul Korea

Seoul National University Seoul Korea

Skobeltsyn Institute of Nuclear Physics Lomonosov Moscow State University Moscow Russia

State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China

State University of New York at Buffalo Buffalo USA

Sungkyunkwan University Suwon Korea

Tata Institute of Fundamental Research A Mumbai India

Tata Institute of Fundamental Research B Mumbai India

Tbilisi State University Tbilisi Georgia

Texas A and M University College Station USA

Texas Tech University Lubbock USA

The Ohio State University Columbus USA

The University of Alabama Tuscaloosa USA

The University of Iowa Iowa City USA

The University of Kansas Lawrence USA

Tsinghua University Beijing China

Universidad Autónoma de Madrid Madrid Spain

Universidad Autónoma de San Luis Potosí San Luis Potosí Mexico

Universidad de Los Andes Bogotá Colombia

Universidad de Oviedo Oviedo Spain

Universidad de Sonora Hermosillo Mexico

Universidad Iberoamericana Mexico City Mexico

Universidad San Francisco de Quito Quito Ecuador

Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil

Universidade Estadual Paulista Universidade Federal do ABC São Paulo Brazil

Universität Zürich Zurich Switzerland

Université Catholique de Louvain Louvain la Neuve Belgium

Université de Lyon Université Claude Bernard Lyon 1 CNRS IN2P3 Institut de Physique Nucléaire de Lyon Villeurbanne France

Université de Strasbourg CNRS IPHC UMR 7178 Strasbourg France

Université Libre de Bruxelles Brussels Belgium

Universiteit Antwerpen Antwerp Belgium

University College Dublin Dublin Ireland

University of Auckland Auckland New Zealand

University of Bristol Bristol United Kingdom

University of California Davis Davis USA

University of California Los Angeles USA

University of California Riverside Riverside USA

University of California San Diego La Jolla USA

University of Canterbury Christchurch New Zealand

University of Colorado Boulder Boulder USA

University of Cyprus Nicosia Cyprus

University of Delhi Delhi India

University of Florida Gainesville USA

University of Hamburg Hamburg Germany

University of Illinois at Chicago Chicago USA

University of Ioánnina Ioánnina Greece

University of Maryland College Park USA

University of Minnesota Minneapolis USA

University of Mississippi Oxford USA

University of Nebraska Lincoln Lincoln USA

University of Notre Dame Notre Dame USA

University of Puerto Rico Mayagüez USA

University of Rochester Rochester USA

University of Seoul Seoul Korea

University of Sofia Sofia Bulgaria

University of Tennessee Knoxville USA

University of Virginia Charlottesville USA

University of Wisconsin Madison Madison WI USA

Vanderbilt University Nashville USA

Vilnius University Vilnius Lithuania

Vrije Universiteit Brussel Brussels Belgium

Wayne State University Detroit USA

Wigner Research Centre for Physics Budapest Hungary

Yerevan Physics Institute Yerevan Armenia

See more in PubMed

D0 Collaboration Combination of searches for anomalous top quark couplings with DOI

ATLAS Collaboration Probing the Wtb vertex structure in DOI

ATLAS Collaboration Measurement of the PubMed DOI PMC

CMS Collaboration Search for anomalous Wtb couplings and flavour-changing neutral currents in DOI

CMS Collaboration Measurement of the W boson helicity in events with a single reconstructed top quark in pp collisions at DOI

CMS Collaboration Measurements of PubMed DOI

D0 Collaboration Search for flavor changing neutral currents via quark-gluon couplings in single top quark production using DOI

CDF Collaboration Search for top-quark production via flavor-changing neutral currents in W+1 jet events at CDF. Phys. Rev. Lett. 2009;102:151801. doi: 10.1103/PhysRevLett.102.151801. PubMed DOI

ATLAS Collaboration Search for single top-quark production via flavour-changing neutral currents at 8 TeV with the ATLAS detector. Eur. Phys. J. C. 2016;76:55. doi: 10.1140/epjc/s10052-016-3876-4. PubMed DOI PMC

CMS Collaboration Measurements of DOI

Buchmuller W, Wyler D. Effective Lagrangian analysis of new interactions and flavor conservation. Nucl. Phys. B. 1986;268:621. doi: 10.1016/0550-3213(86)90262-2. DOI

Grzadkowski B, Iskrzynski M, Misiak M, Rosiek J. Dimension-six terms in the standard model Lagrangian. JHEP. 2010;10:085. doi: 10.1007/JHEP10(2010)085. DOI

Zhang C, Willenbrock S. Effective-field-theory approach to top-quark production and decay. Phys. Rev. D. 2011;83:034006. doi: 10.1103/PhysRevD.83.034006. DOI

Buckley A, et al. Constraining top quark effective theory in the LHC Run II era. JHEP. 2016;04:015. doi: 10.1007/JHEP04(2016)015. DOI

Hartland NP, et al. A Monte Carlo global analysis of the standard model effective field theory: the top quark sector. JHEP. 2019;04:100. doi: 10.1007/JHEP04(2019)100. DOI

Durieux G, Maltoni F, Zhang C. Global approach to top-quark flavor-changing interactions. Phys. Rev. D. 2015;91:074017. doi: 10.1103/PhysRevD.91.074017. DOI

J.A. Aguilar Saavedra et al., Interpreting top-quark LHC measurements in the standard-model effective field theory (2018). arXiv:1802.07237

Godbole RM, Peskin ME, Rindani SD, Singh RK. Why the angular distribution of the top decay lepton is unchanged by anomalous DOI

Stange A, Willenbrock S. Yukawa correction to top quark production at the Tevatron. Phys. Rev. D. 1993;48:2054. doi: 10.1103/PhysRevD.48.2054. PubMed DOI

C.-S. Li, B.-Q. Hu, J.-M. Yang, C.-G. Hu, Supersymmetric QCD corrections to top quark production in p PubMed

Krauss F, Kuttimalai S, Plehn T. LHC multijet events as a probe for anomalous dimension-six gluon interactions. Phys. Rev. D. 2017;95:035024. doi: 10.1103/PhysRevD.95.035024. DOI

Cho PL, Simmons EH. Searching for PubMed DOI

Hirschi V, Maltoni F, Tsinikos I, Vryonidou E. Constraining anomalous gluon self-interactions at the LHC: a reappraisal. JHEP. 2018;07:093. doi: 10.1007/JHEP07(2018)093. DOI

CMS Collaboration The CMS experiment at the CERN LHC. JINST. 2008;3:S08004. doi: 10.1088/1748-0221/3/08/S08004. DOI

Frixione S, Nason P, Oleari C. Matching NLO QCD computations with parton shower simulations: the POWHEG method. JHEP. 2007;11:070. doi: 10.1088/1126-6708/2007/11/070. DOI

Alioli S, Nason P, Oleari C, Re E. A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX. JHEP. 2010;06:043. doi: 10.1007/JHEP06(2010)043. DOI

Re E. Single-top Wt-channel production matched with parton showers using the POWHEG method. Eur. Phys. J. C. 2011;71:1547. doi: 10.1140/epjc/s10052-011-1547-z. DOI

Alioli S, Nason P, Oleari C, Re E. NLO single-top production matched with shower in POWHEG: DOI

Sjöstrand T, et al. An introduction to PYTHIA 8.2. Comput. Phys. Commun. 2015;191:159. doi: 10.1016/j.cpc.2015.01.024. DOI

CMS Collaboration Event generator tunes obtained from underlying event and multiparton scattering measurements. Eur. Phys. J. C. 2016;76:155. doi: 10.1140/epjc/s10052-016-3988-x. PubMed DOI PMC

CMS Collaboration, Investigations of the impact of the parton shower tuning in PYTHIA 8 in the modelling of

NNPDF Collaboration Parton distributions for the LHC Run II. JHEP. 2015;04:040. doi: 10.1007/JHEP04(2015)040. DOI

Czakon M, Mitov A. Top++: a program for the calculation of the top-pair cross-section at hadron colliders. Comput. Phys. Commun. 2014;185:2930. doi: 10.1016/j.cpc.2014.06.021. DOI

N. Kidonakis, Theoretical results for electroweak-boson and single-top production, in Proceedings, 23rd International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS 2015). Dallas, April, 2015, PoS(DIS2015)170, p. 170. 10.22323/1.247.0170. arXiv:1506.04072.

Czakon M, et al. Top-pair production at the LHC through NNLO QCD and NLO EW. JHEP. 2017;10:186. doi: 10.1007/JHEP10(2017)186. DOI

Alwall J, et al. MadGraph/MadEvent v4: the new web generation. JHEP. 2007;09:028. doi: 10.1088/1126-6708/2007/09/028. DOI

Alwall J, et al. The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations. JHEP. 2014;07:079. doi: 10.1007/JHEP07(2014)079. DOI

Frederix R, Frixione S. Merging meets matching in MC@NLO. JHEP. 2012;12:061. doi: 10.1007/JHEP12(2012)061. DOI

GEANT4 Collaboration Geant4—a simulation toolkit. Nucl. Instrum. Methods A. 2003;506:250. doi: 10.1016/S0168-9002(03)01368-8. DOI

Allison J, et al. Geant4 developments and applications. IEEE Trans. Nucl. Sci. 2006;53:270. doi: 10.1109/TNS.2006.869826. DOI

Degrande C, et al. UFO—the universal feynRules output. Comput. Phys. Commun. 2012;183:1201. doi: 10.1016/j.cpc.2012.01.022. DOI

Alloul A, et al. FeynRules 2.0—a complete toolbox for tree-level phenomenology. Comput. Phys. Commun. 2014;185:2250. doi: 10.1016/j.cpc.2014.04.012. DOI

Franzosi DB, Zhang C. Probing the top-quark chromomagnetic dipole moment at next-to-leading order in QCD. Phys. Rev. D. 2015;91:114010. doi: 10.1103/PhysRevD.91.114010. DOI

Zhang C. Single top production at next-to-leading order in the standard model effective field theory. Phys. Rev. Lett. 2016;116:162002. doi: 10.1103/PhysRevLett.116.162002. PubMed DOI

CMS Collaboration The CMS trigger system. JINST. 2017;12:P01020. doi: 10.1088/1748-0221/12/01/P01020. DOI

CMS Collaboration Particle-flow reconstruction and global event description with the CMS detector. JINST. 2017;12:P10003. doi: 10.1088/1748-0221/12/10/P10003. DOI

CMS Collaboration Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at DOI

CMS Collaboration Performance of the CMS muon detector and muon reconstruction with proton-proton collisions at DOI

Cacciari M, Salam GP, Soyez G. FastJet user manual. Eur. Phys. J. C. 2012;72:1896. doi: 10.1140/epjc/s10052-012-1896-2. DOI

Cacciari M, Salam GP, Soyez G. The anti- DOI

Cacciari M, Salam GP. Dispelling the DOI

CMS Collaboration Jet energy scale and resolution in the CMS experiment in pp collisions at 8 TeV. JINST. 2017;12:P02014. doi: 10.1088/1748-0221/12/02/P02014. DOI

CMS Collaboration Identification of heavy-flavour jets with the CMS detector in pp collisions at 13 TeV. JINST. 2018;13:P05011. doi: 10.1088/1748-0221/13/05/P05011. DOI

CMS Collaboration Performance of the CMS missing transverse momentum reconstruction in pp data at DOI

CMS Collaboration First measurement of the cross section for top-quark pair production in proton-proton collisions at DOI

Denby BH. The use of neural networks in high-energy physics. Neural Comput. 1993;5:505. doi: 10.1162/neco.1993.5.4.505. DOI

CMS Collaboration Measurement of the production cross section for single top quarks in association with W bosons in proton-proton collisions at DOI

CMS Collaboration, CMS luminosity measurements for the 2016 data taking period. CMS Physics Analysis Summary CMS-PAS-LUM-17-001 (2017)

CMS Collaboration Measurements of inclusive W and Z cross sections in pp collisions at DOI

CMS Collaboration Determination of jet energy calibration and transverse momentum resolution in CMS. JINST. 2011;6:P11002. doi: 10.1088/1748-0221/6/11/P11002. DOI

CMS Collaboration Measurement of the inelastic proton-proton cross section at DOI

CMS Collaboration Measurement of differential cross sections for Z boson production in association with jets in proton-proton collisions at PubMed DOI PMC

CMS Collaboration Measurement of the cross section for top quark pair production in association with a W or Z boson in proton-proton collisions at DOI

Butterworth J, et al. PDF4LHC recommendations for LHC Run II. J. Phys. G. 2016;43:023001. doi: 10.1088/0954-3899/43/2/023001. DOI

CMS Collaboration Measurement of the top quark mass using proton-proton data at DOI

Frixione S, et al. Single-top hadroproduction in association with a W boson. JHEP. 2008;07:029. doi: 10.1088/1126-6708/2008/07/029. DOI

Campbell JM, Tramontano F. Next-to-leading order corrections to Wt production and decay. Nucl. Phys. B. 2005;726:109. doi: 10.1016/j.nuclphysb.2005.08.015. DOI

Belyaev A, Boos E. Single top quark tW+X production at the CERN LHC: a closer look. Phys. Rev. D. 2001;63:034012. doi: 10.1103/PhysRevD.63.034012. DOI

Skands P, Carrazza S, Rojo J. Tuning PYTHIA 8.1: the Monash 2013 tune. Eur. Phys. J. C. 2014;74:3024. doi: 10.1140/epjc/s10052-014-3024-y. DOI

CMS Collaboration Precise determination of the mass of the Higgs boson and tests of compatibility of its couplings with the standard model predictions using proton collisions at 7 and 8 TeV. Eur. Phys. J. C. 2015;75:212. doi: 10.1140/epjc/s10052-015-3351-7. PubMed DOI PMC

Find record

Citation metrics

Loading data ...

Archiving options

Loading data ...