Search for single top quark production via contact interactions at LEP2

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5 Citations (Scopus)


Single top quark production via four-fermion contact interactions associated to flavour-changing neutral currents was searched for in data taken by the DELPHI detector at LEP2. The data were accumulated at centre-of-mass energies ranging from 189 to 209 GeV, with an integrated luminosity of 598.1 pb^-1. No evidence for a signal was found. Limits on the energy scale Lambda, were set for scalar-, vector- and tensor-like coupling scenarios.
Original languageEnglish
Article number1555
Number of pages22
Publication statusPublished - 2011


  • top : single production
  • contact interaction
  • four-fermion interaction
  • neutral current : flavor changing
  • electron positron : annihilation
  • effective Lagrangian
  • new physics
  • coupling constant : upper limit
  • experimental results
  • CERN LEP Stor
  • electron positron --> top charm


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