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Search for flavor changing neutral currents in decays of top quarks

  • V. M. Abazov
  • , B. Abbott
  • , B. S. Acharya
  • , M. Adams
  • , T. Adams
  • , G. D. Alexeev
  • , G. Alkhazov
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  • , G. Alverson
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  • , L. S. Ancu
  • , M. Aoki
  • , M. Arov
  • , A. Askew
  • , B. Åsman
  • , O. Atramentov
  • , C. Avila
  • , J. BackusMayes
  • , F. Badaud
  • , L. Bagby
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Yasuda, Y. A. Yatsunenko, Z. Ye, H. Yin, K. Yip, S. W. Youn, J. Yu, S. Zelitch, T. Zhao, B. Zhou, J. Zhu, M. Zielinski, D. Zieminska, L. Zivkovic
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Research output: Contribution to journalArticlepeer-review

78 Scopus citations

Abstract

We present a search for flavor changing neutral currents in decays of top quarks. The analysis is based on a search for tt∥→ĺll∥+jets (l,ĺ=e,μ) final states using 4.1 fb-1 of integrated luminosity of pp∥ collisions at s=1.96 TeV. We extract limits on the branching ratio B(t→Zq) (q=u,c quarks), assuming anomalous tuZ or tcZ couplings. We do not observe any sign of such anomalous coupling and set a limit of B<3.2% at 95% C.L.

Original languageEnglish
Pages (from-to)313-320
Number of pages8
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume701
Issue number3
DOIs
StatePublished - 11 Jul 2011

Keywords

  • D0
  • Flavor changing neutral current
  • Tevatron
  • Top quark

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