Eur Phys J C (2004) 33: s761-s763
https://doi.org/10.1140/epjcd/s2003-03-816-6

PS08 Physics Beyond the Standard Model

Single-top production via flavour changing neutral currents

ZEUS/F1, DESY, Notkestraße 85, 22607 Hamburg, Germany

Received: 1 December 2003
Accepted: 9 December 2003
Published online: 12 December 2003

Abstract

Recent results on single-top production via flavour changing neutral currents (FCNC) are summarised. Model independent limits can be set directly for the process at both LEP and HERA and indirectly from the decays of the top quark at the TeVatron. No evidence for FCNC are observed at LEP and the TeVatron. Some events compatible with single top production are observed by the H1 collaboration at HERA, but no such events appear at ZEUS. Limits on FCNC from the different experiments are presented, with the strongest coming from the HERA and LEP experiments.

PACS: 14.65.Ha Properties of Top Quarks