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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/75677
Title: 
Search for the standard model Higgs boson produced in association with a top-quark pair in pp collisions at the LHC
Author(s): 
Institution: 
  • Yerevan Physics Institute
  • Institut für Hochenergiephysik der OeAW
  • National Centre for Particle and High Energy Physics
  • Universiteit Antwerpen
  • Vrije Universiteit Brussel
  • Université Libre de Bruxelles
  • Ghent University
  • Université Catholique de Louvain
  • Université de Mons
  • Centro Brasileiro de Pesquisas Físicas (CBPF)
  • Universidade do Estado do Rio de Janeiro (UERJ)
  • Universidade Estadual Paulista (UNESP)
  • Universidade Federal do ABC (UFABC)
  • Institute for Nuclear Research and Nuclear Energy
  • University of Sofia
  • Institute of High Energy Physics
  • Peking University
  • Universidad de los Andes
  • Technical University of Split
  • University of Split
  • Institute Rudjer Boskovic
  • University of Cyprus
  • Charles University
  • Egyptian Network of High Energy Physics
  • National Institute of Chemical Physics and Biophysics
  • University of Helsinki
  • Helsinki Institute of Physics
  • Lappeenranta University of Technology
  • CEA/Saclay
  • IN2P3-CNRS
  • CNRS/IN2P3
  • Institut de Physique Nucléaire de Lyon
  • Tbilisi State University
  • I. Physikalisches Institut
  • III. Physikalisches Institut A
  • III. Physikalisches Institut B
  • Deutsches Elektronen-Synchrotron
  • University of Hamburg
  • Institut für Experimentelle Kernphysik
  • Institute of Nuclear Physics Demokritos
  • University of Athens
  • University of Ioánnina
  • KFKI Research Institute for Particle and Nuclear Physics
  • Institute of Nuclear Research ATOMKI
  • University of Debrecen
  • Panjab University
  • University of Delhi
  • Saha Institute of Nuclear Physics
  • Bhabha Atomic Research Centre
  • Tata Institute of Fundamental Research - EHEP
  • Tata Institute of Fundamental Research - HECR
  • Institute for Research in Fundamental Sciences (IPM)
  • INFN Sezione di Bari
  • Università di Bari
  • Politecnico di Bari
  • INFN Sezione di Bologna
  • Università di Bologna
  • INFN Sezione di Catania
  • Università di Catania
  • INFN Sezione di Firenze
  • Università di Firenze
  • INFN Laboratori Nazionali di Frascati
  • INFN Sezione di Genova
  • Università di Genova
  • INFN Sezione di Milano-Bicocca
  • Università di Milano-Bicocca
  • INFN Sezione di Napoli
  • Università di Napoli 'Federico II'
  • Università della Basilicata (Potenza)
  • Università G. Marconi (Roma)
  • INFN Sezione di Padova
  • Università di Padova
  • Università di Trento (Trento)
  • INFN Sezione di Pavia
  • Università di Pavia
  • INFN Sezione di Perugia
  • Università di Perugia
  • INFN Sezione di Pisa
  • Università di Pisa
  • Scuola Normale Superiore di Pisa
  • INFN Sezione di Roma
  • Università di Roma
  • INFN Sezione di Torino
  • Università di Torino
  • Università del Piemonte Orientale (Novara)
  • INFN Sezione di Trieste
  • Università di Trieste
  • Kangwon National University
  • Kyungpook National University
  • Institute for Universe and Elementary Particles
  • Korea University
  • University of Seoul
  • Sungkyunkwan University
  • Vilnius University
  • Centro de Investigacion y de Estudios Avanzados del IPN
  • Universidad Iberoamericana
  • Benemerita Universidad Autonoma de Puebla
  • Universidad Autónoma de San Luis PotosI
  • University of Auckland
  • University of Canterbury
  • Quaid-I-Azam University
  • National Centre for Nuclear Research
  • University of Warsaw
  • Laboratório de Instrumentação e Física Experimental de Partículas (LIP)
  • Joint Institute for Nuclear Research
  • Petersburg Nuclear Physics Institute Gatchina
  • Institute for Nuclear Research
  • Institute for Theoretical and Experimental Physics (ITEP)
  • P.N. Lebedev Physical Institute
  • Lomonosov Moscow State University
  • Institute for High Energy Physics
  • Faculty of Physics and Vinca Institute of Nuclear Sciences
  • Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT)
  • Universidad Autónoma de Madrid
  • Universidad de Oviedo
  • CSIC-Universidad de Cantabria
  • European Organization for Nuclear Research
  • Paul Scherrer Institut
  • ETH Zurich
  • Universität Zürich
  • National Central University
  • National Taiwan University (NTU)
  • Chulalongkorn University
  • Cukurova University
  • Physics Department
  • Bogazici University
  • Istanbul Technical University
  • Kharkov Institute of Physics and Technology
  • University of Bristol
  • Rutherford Appleton Laboratory
  • Imperial College
  • Brunel University
  • Baylor University
  • University of Alabama
  • Boston University
  • Brown University
  • Davis
  • University of California
  • Riverside
  • Santa Barbara
  • California Institute of Technology
  • Carnegie Mellon University
  • University of Colorado at Boulder
  • Cornell University
  • Fairfield University
  • Fermi National Accelerator Laboratory
  • University of Florida
  • Florida International University
  • Florida State University
  • Florida Institute of Technology
  • University of Illinois at Chicago (UIC)
  • University of Iowa
  • Johns Hopkins University
  • University of Kansas (KU)
  • Kansas State University
  • Lawrence Livermore National Laboratory
  • University of Maryland
  • Massachusetts Institute of Technology (MIT)
  • University of Minnesota
  • University of Mississippi
  • University of Nebraska-Lincoln
  • State University of New York at Buffalo
  • Northeastern University
  • Northwestern University (NU)
  • University of Notre Dame
  • Ohio State University
  • Princeton University
  • University of Puerto Rico
  • Purdue University
  • Purdue University Calumet
  • Rice University
  • University of Rochester
  • Rockefeller University
  • State University of New Jersey
  • University of Tennessee
  • Texas AandM University
  • Texas Tech University
  • Vanderbilt University
  • University of Virginia (UVA)
  • Wayne State University
  • University of Wisconsin
  • Vienna University of Technology
  • Universidade Estadual de Campinas (UNICAMP)
  • Suez Canal University
  • Cairo University
  • Fayoum University
  • British University in Egypt
  • Ain Shams University
  • Université de Haute Alsace
  • Brandenburg University of Technology
  • Eötvös Loránd University
  • King Abdulaziz University
  • University of Visva-Bharati
  • Sharif University of Technology
  • Isfahan University of Technology
  • Islamic Azad University
  • Laboratori Nazionali di Legnaro dell' INFN
  • Università degli Studi di Siena
  • University of Belgrade
  • Scuola Normale e Sezione dell'INFN
  • CERN
  • Albert Einstein Center for Fundamental Physics
  • Gaziosmanpasa University
  • Adiyaman University
  • Mersin University
  • Izmir Institute of Technology
  • Ozyegin University
  • Kafkas University
  • Suleyman Demirel University
  • Ege University
  • Istanbul
  • Kahramanmaras Sütcü Imam University
  • University of Southampton
  • Utah Valley University
  • Argonne National Laboratory
  • Erzincan University
ISSN: 
  • 1126-6708
  • 1029-8479
Abstract: 
A search for the standard model Higgs boson produced in association with a top-quark pair is presented using data samples corresponding to an integrated luminosity of 5.0 fb-1 (5.1 fb-1) collected in pp collisions at the center-of-mass energy of 7 TeV (8 TeV). Events are considered where the top-quark pair decays to either one lepton+jets (tt̄ → ℓvqq̄bb̄) or dileptons (tt̄ → ℓ+vl- rfvn1̄bb̄), ℓ being an electron or a muon. The search is optimized for the decay mode H → bb̄. The largest background to the tt̄H signal is top-quark pair production with additional jets. Artificial neural networks are used to discriminate between signal and background events. Combining the results from the 7 TeV and 8 TeV samples, the observed (expected) limit on the cross section for Higgs boson production in association with top-quark pairs for a Higgs boson mass of 125 GeV is 5.8 (5.2) times the standard model expectation. [Figure not available: see fulltext.] © 2013 Cern for the benefit of the CMS collaboration.
Issue Date: 
18-Jun-2013
Citation: 
Journal of High Energy Physics, v. 2013, n. 5, 2013.
Keywords: 
  • Hadron-Hadron Scattering
  • Higgs physics
Source: 
http://dx.doi.org/10.1007/JHEP05(2013)145
URI: 
Access Rights: 
Acesso aberto
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/75677
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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