Measurement of the tt‾bb‾ production cross section in the all-jet final state in pp collisions at s=13 TeV

The CMS collaboration

doi:10.1016/j.physletb.2020.135285

Measurement of the tt‾bb‾ production cross section in the all-jet final state in pp collisions at s=13 TeV

The CMS collaboration

Yerevan Physics Institute
Institut für Hochenergiephysik
Vienna University of Technology
Institute for Nuclear Problems of Belarusian State University
University of Antwerp
Vrjie Universiteit Brussel
INFN Sezione di Torino
University of Turin
Université Libre de Bruxelles
Ghent University
Université Paris-Saclay
University of Louvain
Centro Brasileiro de Pesquisas Fisicas
Rua São Francisco de Xavier
University of Campinas (UNICAMP)
Universidade Federal do Rio Grande do Sul
UFMS
Universidade Federal de Pelotas
São Paulo State University
Federal University of ABC (UFABC)
Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences
University of Sofia
Beihang University
Institute of High Energy Physics, Chinese Academy of Sciences
University of Chinese Academy of Sciences
State Key Laboratory of Nuclear Physics and Technology
Tsinghua University
Zhejiang University
Universidad de Los Andes, Colombia
Universidad de Antioquia
Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, University of Split
Faculty of Science, University of Split
Ruđer Bošković Institute
Institute for Theoretical and Experimental Physics
University of Cyprus
Charles University
Joint Institute for Nuclear Research, Dubna
Escuela Politecnica Nacional
Universidad San Francisco de Quito
Egyptian Network of High Energy Physics
Cairo University
British University in Egypt
Ain Shams University
National Institute of Chemical Physics and Biophysics, Tallinn
University of Helsinki
Helsinki Institute of Physics
LUT University
Purdue University
Ip Paris
Université de Strasbourg
Université de Haute Alsace
Université Paris-Sud
IGFL, Université de Lyon, Université Lyon 1
Georgian Technical University
Tbilisi State University
RWTH Aachen University
Erzincan University
c/o DESY
Universität Hamburg
Joint Faculty of the Brandenburg University of Technology Cottbus Senftenberg
Institute of Meteorology and Climate Research
European Organization for Nuclear Research
NCSR Demokritos
University of Athens
National Technical University of Athens
University of Ioannina
Eötvös Loránd University
University of Debrecen
Wigner Research Centre for Physics
Institute of Nuclear Research ATOMKI
Eszterhazy Karoly University
Indian Institute of Science
National Institute of Science Education and Research
IIT Bhubaneswar
Institute of Physics Bhubaneswar
Panjab University
University of Delhi
Saha Institute of Nuclear Physics
Shoolini University
University of Visva-Bharati
Indian Institute of Technology Madras
Bhabha Atomic Research Centre
Tata Institute of Fundamental Research, Mumbai
Indian Institute of Science Education and Research (IISER)
Institute for Research in Fundamental Sciences (IPM)
Isfahan University of Technology
University College Dublin
INFN Sezione di Bari
Università degli studi di Bari Aldo Moro
Politecnico di Bari
Sezione di Roma
INFN
INFN Sezione di Bologna
University of Bologna
ENEA Climate Modeling and Impacts
INFN Sezione di Perugia
INFN Sezione di Pavia
University of Pavia
INFN Sezione di Catania
Università degli Studi di Catania
CSFNSM
Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
University of Florence
LNF-INFN
Sezione di Genova
University of Genoa
INFN Sezione di Milano-Bicocca
University of Milano-Bicocca
INFN Sezione di Napoli
Università degli Studi della Basilicata
University of Naples Federico II
Università G. Marconi
University of Padova
University of Perugia
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
University of Pisa
Scuola Normale Superiore di Pisa
University of Rome
Laboratory of Molecular Pathology
INFN Sezione di Trieste
University of Trieste
Kyungpook National University
Chonnam National University
Hanyang University
Korea University
Kyung Hee University
Sejong University
Seoul National University
University of Seoul
Sungkyunkwan University
Riga Technical University
Vilnius University
University Malaya
MOSTI
Universidad de Sonora
CINVESTAV-IPN
Consejo Nacional de Ciencia y Tecnología
Universidad Iberoamericana
Benemerita Universidad Autonoma de Puebla
Universidad Autónoma de San Luis Potosi
University of Montenegro
University of Auckland
University of Canterbury
Quaid-i-Azam University
Agh University of Science and Technology Faculty of Computer Science
National Centre for Nuclear Research
University of Warsaw
Warsaw University of Technology
Lisboa
Institute for Nuclear Research of the Russian Academy of Sciences
National Research Nuclear University MEPhI
Institute of Nuclear Physics of the Uzbekistan Academy of Sciences
Petersburg Nuclear Physics Institute (PNPI)
St. Petersburg State Polytechnical University
University of Florida
Imperial College London
Moscow Institute of Physics and Technology
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
Moscow State University
California Institute of Technology
Novosibirsk State University
Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
Kurchatov Institute
National Research Tomsk Polytechnic University
Tomsk State University
University of Belgrade
University of Belgrade
Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT)
Universidad Autónoma de Madrid
University of Oviedo
CSIC-Univ. Cantabria
University of Siena
University of Colombo
University of Ruhuna
Paul Scherrer Institut
University of Zurich
ETH Zurich
Stefan Meyer Institute for Subatomic Physics (SMI)
National Central University
National Taiwan University
Chulalongkorn University
Cukurova University
Burdur Mehmet Akif Ersoy University
Şırnak University
Beykent University
Istanbul Aydin University
Mersin University
Piri Reis University
Gaziosmanpasa University
Adiyaman University
Middle East Technical University (METU)
Ozyegin University
Izmir Institute of Technology
Bogazici University
Marmara University
Kafkas University
Istanbul Bilgi University
Istanbul Technical University
Hacettepe University
Istanbul University
Academy of Science of Ukraine
Kharkov Institute of Physics and Technology
University of Bristol
CCLRC Rutherford Appleton Laboratory
University of Southampton
IPPP Durham University
Monash University
Brunel University London
Baylor University
Catholic University of America
University of Alabama
Boston University
Women and Infants Hospital of Rhode Island-Warren Alpert Medical School of Brown University
Bethel University
Karamanoğlu Mehmetbey University
University of California, Davis
University of California, Los Angeles
University of California, Riverside
University of California, San Diego
University of California, Santa Barbara
Carnegie Mellon University
University of Colorado Boulder
Cornell University
Fermi National Accelerator Laboratory
Florida International University
Florida State University
Florida Institute of Technology
University of Illinois at Chicago
University of Iowa
Bingol University
Sinop University
Mimar Sinan University
Johns Hopkins University
University of Kansas
Kansas State University
Lawrence Livermore National Laboratory
University of Maryland, College Park
Massachusetts Institute of Technology
University of Minnesota Twin Cities
University of Mississippi
University of Nebraska-Lincoln
University at Buffalo, The State University of New York
Northeastern University
Northwestern University
University of Notre Dame
The Ohio State University
Princeton University
University of Puerto Rico
Purdue University Northwest
Rice University
University of Rochester
Rutgers University–New Brunswick
University of Tennessee
Texas A&M University
Texas A&M University at Qatar
Texas Tech University
Vanderbilt University
University of Virginia
Wayne State University
University of Wisconsin-Madison
University of Hyderabad

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

A measurement of the production cross section of top quark pairs in association with two b jets (tt‾bb‾) is presented using data collected in proton-proton collisions at s=13 TeV by the CMS detector at the LHC corresponding to an integrated luminosity of 35.9 fb⁻¹. The cross section is measured in the all-jet decay channel of the top quark pair by selecting events containing at least eight jets, of which at least two are identified as originating from the hadronization of b quarks. A combination of multivariate analysis techniques is used to reduce the large background from multijet events not containing a top quark pair, and to help discriminate between jets originating from top quark decays and other additional jets. The cross section is determined for the total phase space to be 5.5±0.3(stat)_−1.3 ^+1.6(syst)pb and also measured for two fiducial tt‾bb‾ definitions. The measured cross sections are found to be larger than theoretical predictions by a factor of 1.5–2.4, corresponding to 1–2 standard deviations.

langue originale	Anglais
Numéro d'article	135285
journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	803
Les DOIs	https://doi.org/10.1016/j.physletb.2020.135285
état	Publié - 10 avr. 2020

Accès au document

10.1016/j.physletb.2020.135285

Contient cette citation

@article{9cec2c9b6fe449da9d4229d7566d172f,

title = "Measurement of the tt‾bb‾ production cross section in the all-jet final state in pp collisions at s=13 TeV",

abstract = "A measurement of the production cross section of top quark pairs in association with two b jets (tt‾bb‾) is presented using data collected in proton-proton collisions at s=13 TeV by the CMS detector at the LHC corresponding to an integrated luminosity of 35.9 fb−1. The cross section is measured in the all-jet decay channel of the top quark pair by selecting events containing at least eight jets, of which at least two are identified as originating from the hadronization of b quarks. A combination of multivariate analysis techniques is used to reduce the large background from multijet events not containing a top quark pair, and to help discriminate between jets originating from top quark decays and other additional jets. The cross section is determined for the total phase space to be 5.5±0.3(stat)−1.3 +1.6(syst)pb and also measured for two fiducial tt‾bb‾ definitions. The measured cross sections are found to be larger than theoretical predictions by a factor of 1.5–2.4, corresponding to 1–2 standard deviations.",

keywords = "CMS, Measurement, Physics, Top",

author = "\{The CMS collaboration\} and Sirunyan, \{A. M.\} and A. Tumasyan and W. Adam and F. Ambrogi and T. Bergauer and J. Brandstetter and M. Dragicevic and J. Er{\"o} and \{Escalante Del Valle\}, A. and M. Flechl and R. Fr{\"u}hwirth and M. Jeitler and N. Krammer and I. Kr{\"a}tschmer and D. Liko and T. Madlener and I. Mikulec and N. Rad and J. Schieck and R. Sch{\"o}fbeck and M. Spanring and D. Spitzbart and W. Waltenberger and Wulz, \{C. E.\} and M. Zarucki and V. Drugakov and V. Mossolov and \{Suarez Gonzalez\}, J. and Darwish, \{M. R.\} and \{De Wolf\}, \{E. A.\} and \{Di Croce\}, D. and X. Janssen and A. Lelek and M. Pieters and \{Rejeb Sfar\}, H. and \{Van Haevermaet\}, H. and \{Van Mechelen\}, P. and \{Van Putte\}, S. and \{Van Remortel\}, N. and F. Blekman and Bols, \{E. S.\} and F. Beaudette and \{Granier de Cassagnac\}, R. and M. Nguyen and C. Ochando and P. Paganini and R. Salerno and A. Zabi and A. Zghiche and A. Cappati",

note = "Publisher Copyright: {\textcopyright} 2020 The Author",

year = "2020",

month = apr,

day = "10",

doi = "10.1016/j.physletb.2020.135285",

language = "English",

volume = "803",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

}

TY - JOUR

T1 - Measurement of the tt‾bb‾ production cross section in the all-jet final state in pp collisions at s=13 TeV

AU - The CMS collaboration

AU - Sirunyan, A. M.

AU - Tumasyan, A.

AU - Adam, W.

AU - Ambrogi, F.

AU - Bergauer, T.

AU - Brandstetter, J.

AU - Dragicevic, M.

AU - Erö, J.

AU - Escalante Del Valle, A.

AU - Flechl, M.

AU - Frühwirth, R.

AU - Jeitler, M.

AU - Krammer, N.

AU - Krätschmer, I.

AU - Liko, D.

AU - Madlener, T.

AU - Mikulec, I.

AU - Rad, N.

AU - Schieck, J.

AU - Schöfbeck, R.

AU - Spanring, M.

AU - Spitzbart, D.

AU - Waltenberger, W.

AU - Wulz, C. E.

AU - Zarucki, M.

AU - Drugakov, V.

AU - Mossolov, V.

AU - Suarez Gonzalez, J.

AU - Darwish, M. R.

AU - De Wolf, E. A.

AU - Di Croce, D.

AU - Janssen, X.

AU - Lelek, A.

AU - Pieters, M.

AU - Rejeb Sfar, H.

AU - Van Haevermaet, H.

AU - Van Mechelen, P.

AU - Van Putte, S.

AU - Van Remortel, N.

AU - Blekman, F.

AU - Bols, E. S.

AU - Beaudette, F.

AU - Granier de Cassagnac, R.

AU - Nguyen, M.

AU - Ochando, C.

AU - Paganini, P.

AU - Salerno, R.

AU - Zabi, A.

AU - Zghiche, A.

AU - Cappati, A.

PY - 2020/4/10

Y1 - 2020/4/10

N2 - A measurement of the production cross section of top quark pairs in association with two b jets (tt‾bb‾) is presented using data collected in proton-proton collisions at s=13 TeV by the CMS detector at the LHC corresponding to an integrated luminosity of 35.9 fb−1. The cross section is measured in the all-jet decay channel of the top quark pair by selecting events containing at least eight jets, of which at least two are identified as originating from the hadronization of b quarks. A combination of multivariate analysis techniques is used to reduce the large background from multijet events not containing a top quark pair, and to help discriminate between jets originating from top quark decays and other additional jets. The cross section is determined for the total phase space to be 5.5±0.3(stat)−1.3 +1.6(syst)pb and also measured for two fiducial tt‾bb‾ definitions. The measured cross sections are found to be larger than theoretical predictions by a factor of 1.5–2.4, corresponding to 1–2 standard deviations.

AB - A measurement of the production cross section of top quark pairs in association with two b jets (tt‾bb‾) is presented using data collected in proton-proton collisions at s=13 TeV by the CMS detector at the LHC corresponding to an integrated luminosity of 35.9 fb−1. The cross section is measured in the all-jet decay channel of the top quark pair by selecting events containing at least eight jets, of which at least two are identified as originating from the hadronization of b quarks. A combination of multivariate analysis techniques is used to reduce the large background from multijet events not containing a top quark pair, and to help discriminate between jets originating from top quark decays and other additional jets. The cross section is determined for the total phase space to be 5.5±0.3(stat)−1.3 +1.6(syst)pb and also measured for two fiducial tt‾bb‾ definitions. The measured cross sections are found to be larger than theoretical predictions by a factor of 1.5–2.4, corresponding to 1–2 standard deviations.

KW - CMS

KW - Measurement

KW - Physics

KW - Top

U2 - 10.1016/j.physletb.2020.135285

DO - 10.1016/j.physletb.2020.135285

M3 - Article

AN - SCOPUS:85080887360

SN - 0370-2693

VL - 803

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

M1 - 135285

ER -

Measurement of the tt‾bb‾ production cross section in the all-jet final state in pp collisions at s=13 TeV

Résumé

Accès au document

Empreinte digitale

Contient cette citation