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Search for single top quark production via contact interactions at LEP2

Authors: J. Abdallah, O. Oliveira, et al (DELPHI Coll.)

Ref.: EPJ C71, 1555 (2011)

Abstract: 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 Λ, were set for scalar-, vector- and tensor-like coupling scenarios.

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