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- Search for a Fourth Generation t ' Quark in p(p)over-bar Collisions at root s=1.96 TeV
- Abazov, V. M.
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- Yip, K.
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- Zelitch, S.
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- Chevalier-Thery, S.
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- Fisk, H. E.
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- Kumar, A.
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- Banerjee, S.
- Kvita, J.
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- Rubinov, P.
- Jamin, D.
- Ruchti, R.
- Joint Inst Nucl Res
- Centro Brasileiro de Pesquisas Físicas (CBPF)
- Univ Estado Rio de Janeiro
- Universidade Federal do ABC (UFABC)
- Universidade Estadual Paulista (UNESP)
- York Univ
- Simon Fraser Univ
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- Universidad de los Andes
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- 0031-9007
- DOE, USA
- NSF, USA
- Commissariat à l'énergie atomique et aux énergies alternatives (CEA)
- Institut national de physique nucléaire et de physique des particules (IN2P3/CNRS)
- FASI, Russia
- Russian Foundation for Basic Research (RFBR)
- Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
- Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)
- Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
- Fundação para o Desenvolvimento da UNESP (FUNDUNESP)
- DAE, India
- Department of Science and Technology (DST) - India
- Colciencias, Colombia
- Consejo Nacional de Ciencia y Tecnología (CONACYT)
- KRF, Korea
- Korea Science and Engineering Foundation (KOSEF)
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
- UBACyT, Argentina
- Foundation for Fundamental Research on Matter (FOM)
- Science and Technology Facilities Council (STFC)
- Royal Society, United Kingdom
- MSMT, Czech Republic
- Czech Science Foundation (GACR)
- CRC Program
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Bundesministerium für Bildung und Forschung (BMBF)
- Deutsche Forschungsgemeinschaft (DFG)
- Science Foundation Ireland (SFI)
- Swedish Research Council
- Chinese Academy of Sciences (CAS)
- CNSF, China
- We present a search for pair production of a fourth generation t' quark and its antiparticle, followed by their decays to a W boson and a jet, based on an integrated luminosity of 5: 3 fb(-1) of proton-antiproton collisions at root s = 1.96 TeV collected by the D0 Collaboration at the Fermilab Tevatron Collider. We set upper limits on the t'(t) over bar' production cross section that exclude at the 95% C. L. a t' quark that decays exclusively to W + jet with a mass below 285 GeV. We observe a small excess in the mu + jets channel which reduces the mass range excluded compared to the expected limit of 320 GeV in the absence of a signal.
- 16-Aug-2011
- Physical Review Letters. College Pk: Amer Physical Soc, v. 107, n. 8, p. 7, 2011.
- 7
- Amer Physical Soc
- http://dx.doi.org/10.1103/PhysRevLett.107.082001
- http://hdl.handle.net/11449/24575
- Acesso restrito
- outro
- http://repositorio.unesp.br/handle/11449/24575
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