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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/111361
Title: 
Observation of the Associated Production of a Single Top Quark - and a W Boson in pp Collisions at root s=8 TeV
Author(s): 
Institution: 
  • Yerevan Phys Inst
  • Inst Hochenergiephys OeAW
  • Natl Ctr Particle & High Energy Phys
  • Univ Antwerp
  • Vrije Univ Brussel
  • Univ Libre Brussels
  • Univ Ghent
  • Catholic Univ Louvain
  • Univ Mons
  • Centro Brasileiro de Pesquisas Físicas (CBPF)
  • Universidade do Estado do Rio de Janeiro (UERJ)
  • Universidade Estadual Paulista (UNESP)
  • Universidade Federal do ABC (UFABC)
  • Inst Nucl Energy Res
  • Univ Sofia
  • Inst High Energy Phys
  • Peking Univ
  • Universidad de los Andes
  • Tech Univ Split
  • Univ Split
  • Inst Rudjer Boskov
  • Univ Cyprus
  • Charles Univ Prague
  • Acad Sci Res & Technol Arab Republ Egypt
  • NICPB
  • Univ Helsinki
  • Lappeenranta Univ Technol
  • CEA Saclay
  • IN2P3 CNRS
  • Univ Strasbourg
  • CNRS IN2P3
  • Univ Lyon 1
  • Tbilisi State Univ
  • RWTH Aachen University
  • Univ Hamburg
  • Inst Expt Kernphys
  • INPP
  • Univ Athens
  • Univ Ioannina
  • Wigner Res Ctr Phys
  • Inst Nucl Res ATOMKI
  • Debrecen Univ Med
  • Natl Inst Sci Educ & Res
  • Panjab Univ
  • University of Delhi
  • Saha Inst Nucl Phys
  • Bhabha Atom Res Ctr
  • Tata Inst Fundamental Res EHEP
  • Tata Inst Fundamental Res HECR
  • Inst Res Fundamental Sci IPM
  • Univ Coll Dublin
  • Univ Bari
  • Politecn Bari
  • Univ Bologna
  • INFN Sez Bologna
  • Univ Catania
  • INFN Sezione Catania
  • CSFNSM
  • Univ Florence
  • INFN Sezione Firenze
  • INFN Lab Nazl Frascati
  • Univ Genoa
  • INFN Sez Genova
  • Univ Milano Bicocca
  • INFN Sez Milano Bicocca
  • Univ Naples Federico II
  • INFN Sezione Napoli
  • Univ Basilicata Potenza
  • Univ G Marconi Roma
  • Univ Padua
  • INFN Sez Padova
  • Trent Univ
  • Univ Pavia
  • INFN Sez Pavia
  • INFN Sez Perugia
  • Univ Perugia
  • Univ Pisa
  • INFN Sez Pisa
  • Scuola Normale Super Pisa
  • Univ Roma
  • INFN Sez Roma
  • Univ Rome
  • Univ Torino
  • INFN Sez Torino
  • Univ Turin
  • Univ Piemonte Orientale
  • Univ Trieste
  • INFN Sez Trieste
  • Kangwon Natl Univ
  • Kyungpook Natl Univ
  • Chonnam Natl Univ
  • Korea University
  • Univ Seoul
  • Sungkyunkwan Univ
  • Vilnius Univ
  • Univ Malaya Jabatan Fizik
  • Ctr Invest & Estudios Avanzados IPN
  • Univ Iberoamer
  • Univ Autonoma Puebla
  • Univ Autonoma San Luis Potosi
  • Univ Auckland
  • Univ Canterbury
  • Quaid I Azam Univ
  • Natl Ctr Nucl Res
  • Univ Warsaw
  • Lab Instrumentacao & Fis Expt Particulas
  • Joint Inst Nucl Res
  • Petersburg Nucl Phys Inst
  • Inst Nucl Res
  • Institute for Theoretical and Experimental Physics (ITEP)
  • PN Lebedev Phys Inst
  • Lomonosov Moscow State Univ
  • State Res Ctr Russian Federat
  • University of Belgrade
  • Vinca Inst Nucl Sci
  • CIEMAT
  • Univ Autonoma Madrid
  • Univ Oviedo
  • CSIC Univ Cantabria
  • CERN
  • Paul Scherrer Inst
  • Swiss Fed Inst Technol
  • Univ Zurich
  • Natl Cent Univ
  • NTU
  • Chulalongkorn Univ
  • Cukurova Univ
  • Middle East Tech Univ
  • Bogazici Univ
  • Istanbul Tech Univ
  • Kharkov Inst Phys & Technol
  • Univ Bristol
  • Rutherford Appleton Lab
  • Univ London Imperial Coll Sci Technol & Med
  • Brunel Univ
  • Baylor Univ
  • Univ Alabama
  • Boston University
  • Brown University
  • Univ Calif Davis
  • Univ Calif Los Angeles
  • University of California, Riverside (UCR)
  • Univ Calif San Diego
  • Univ Calif Santa Barbara
  • CALTECH
  • Carnegie Mellon Univ
  • Univ Colorado
  • Cornell Univ
  • Fairfield Univ
  • Fermilab Natl Accelerator Lab
  • Univ Florida
  • Florida Int Univ
  • Florida State University
  • Florida Inst Technol
  • Univ Illinois
  • Univ Iowa
  • Johns Hopkins Univ
  • University of Kansas (KU)
  • Kansas State University
  • Lawrence Livermore Natl Lab
  • University of Maryland
  • MIT
  • Univ Minnesota
  • University of Mississippi
  • Univ Nebraska
  • SUNY Buffalo
  • Northeastern University
  • Northwestern University (NU)
  • Notre Dame Univ
  • Princeton University
  • Univ Puerto Rico
  • Purdue Univ
  • Purdue University Calumet
  • Rice University
  • University of Rochester
  • Rockefeller Univ
  • Rutgers State Univ
  • Univ Tennessee
  • Texas A&M Univ
  • Texas Tech Univ
  • Vanderbilt Univ
  • University of Virginia (UVA)
  • Wayne State Univ
  • Univ Wisconsin
  • Vienna Univ Technol
  • Universidade Estadual de Campinas (UNICAMP)
  • Ecole Polytechn
  • Zewail City Sci & Technol
  • Cairo Univ
  • Fayoum Univ
  • British Univ Egypt
  • Ain Shams Univ
  • Univ Haute Alsace
  • Brandenburg Tech Univ Cottbus
  • Eotvos Lorand Univ
  • King Abdulaziz Univ
  • Visva Bharati Univ
  • Univ Ruhuna
  • Isfahan Univ Technol
  • Sharif Univ Technol
  • Islam Azad Univ
  • Univ Siena
  • Univ Michoacana
  • Russian Acad Sci
  • Scuola Normale Sez INFN
  • Albert Einstein Ctr Fundamental Phys
  • Gaziosmanpasa Univ
  • Cag Univ
  • Mersin Univ
  • Izmir Inst Technol
  • Ozyegin Univ
  • Kafkas Univ
  • Mimar Sinan Univ
  • Kahramanmaras Sutcu Imam Univ
  • Univ Southampton
  • Utah Valley Univ
  • Argonne Natl Lab
  • Erzincan Univ
  • Yildiz Tekn Univ
ISSN: 
0031-9007
Sponsorship: 
  • BMWF (Austria)
  • FWF (Austria)
  • FNRS (Belgium)
  • FWO (Belgium)
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
  • Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
  • Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)
  • Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
  • MES (Bulgaria)
  • CERN (China)
  • CAS (China)
  • MoST (China)
  • NSFC (China)
  • COLCIENCIAS (Colombia)
  • MSES (Croatia)
  • CSF (Croatia)
  • RPF (Cyprus)
  • MoER
  • ERDF (Estonia)
  • Academy of Finland (Finland)
  • MEC (Finland)
  • HIP (Finland)
  • CEA (France)
  • CNRS/IN2P3 (France)
  • BMBF (Germany)
  • DFG (Germany)
  • HGF (Germany)
  • GSRT (Greece)
  • OTKA (Hungary)
  • NIH (Hungary)
  • DAE (India)
  • DST (India)
  • IPM (Iran)
  • SFI (Ireland)
  • INFN (Italy)
  • NRF (Republic of Korea)
  • WCU (Republic of Korea)
  • LAS (Lithuania)
  • CINVESTAV (Mexico)
  • CONACYT (Mexico)
  • SEP (Mexico)
  • UASLP-FAI (Mexico)
  • MBIE (New Zealand)
  • PAEC (Pakistan)
  • MSHE (Poland)
  • NSC (Poland)
  • FCT (Portugal)
  • JINR (Dubna)
  • MON (Russia)
  • RosAtom (Russia)
  • RAS (Russia)
  • RFBR (Russia)
  • MESTD (Serbia)
  • SEIDI (Spain)
  • CPAN (Spain)
  • Swiss Funding Agencies (Switzerland)
  • NSC (Taipei)
  • ThEPCenter (Thailand)
  • IPST (Thailand)
  • STAR (Thailand)
  • NSTDA (Thailand)
  • TUBITAK (Turkey)
  • TAEK (Turkey)
  • NASU (Ukraine)
  • STFC (United Kingdom)
  • DOE (USA)
  • NSF (USA)
Sponsorship Process Number: 
MoERSF0690030s09
Abstract: 
The first observation of the associated production of a single top quark and a W boson is presented. The analysis is based on a data set corresponding to an integrated luminosity of 12.2 fb(-1) of proton-proton collisions at root s = 8 TeV recorded by the CMS experiment at the LHC. Events with two leptons and a jet originating from a b quark are selected. A multivariate analysis based on kinematic and topological properties is used to separate the signal from the dominant (tt) over bar background. An excess consistent with the signal hypothesis is observed, with a significance which corresponds to 6.1 standard deviations above a background-only hypothesis. The measured production cross section is 23.4 +/- 5.4 pb, in agreement with the standard model prediction.
Issue Date: 
9-Jun-2014
Citation: 
Physical Review Letters. College Pk: Amer Physical Soc, v. 112, n. 23, 16 p., 2014.
Time Duration: 
16
Publisher: 
Amer Physical Soc
Source: 
http://dx.doi.org/10.1103/PhysRevLett.112.231802
URI: 
Access Rights: 
Acesso aberto
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/111361
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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