Search for single top quark production at LEP2

G Abbiendi; C Ainsley; PF Åkesson; G Alexander; J Allison; G Anagnostou; KJ Anderson; S Arcelli; S Asai; D Axen; G Azuelos; I Bailey; E Barberio; RJ Barlow; RJ Batley; T Behnke; KW Bell; PJ Bell; G Bella; A Bellerive; G Benelli; S Bethke; O Biebel; IJ Bloodworth; O Boeriu; P Bock; J Böhme; D Bonacorsi; M Boutemeur; S Braibant; L Brigliadori; RM Brown; HJ Burckhart; J Cammin; RK Carnegie; B Caron; AA Carter; JR Carter; CY Chang; DG Charlton; PEL Clarke; E Clay; I Cohen; J Couchman; A Csilling; M Cuffiani; S Dado; GM Dallavalle; S Dallison; A De Roeck; EA De Wolf; P Dervan; K Desch; B Dienes; MS Dixit; M Donkers; J Dubbert; E Duchovni; G Duckeck; IP Duerdoth; E Etzion; F Fabbri; L Feld; P Ferrari; F Fiedler; I Fleck; M Ford; A Frey; A Fürtjes; DI Futyan; P Gagnon; JW Gary; G Gaycken; C Geich-Gimbel; G Giacomelli; P Giacomelli; D Glenzinski; J Goldberg; K Graham; E Gross; J Grunhaus; M Gruwé; PO Günther; A Gupta; C Hajdu; M Hamann; GG Hanson; K Harder; A Harel; M Harin-Dirac; M Hauschild; J Hauschildt; CM Hawkes; R Hawkings; RJ Hemingway; C Hensel; G Herten; RD Heuer; JC Hill; K Hoffman

Journal article

Search for single top quark production at LEP2

G Abbiendi, C Ainsley, PF Åkesson, G Alexander, J Allison, G Anagnostou, KJ Anderson, S Arcelli, S Asai, D Axen, G Azuelos, I Bailey, E Barberio, RJ Barlow, RJ Batley, T Behnke, KW Bell, PJ Bell, G Bella, A Bellerive Show all

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics | Published : 2001

DOI: 10.1016/S0370-2693(01)01195-9

Open access

Abstract

A search for single top quark production via flavour changing neutral currents (FCNC) was performed with data collected by the OPAL detector at the e+e- collider LEP. Approximately 600 pb-1 of data collected at √s = 189-209 GeV were used to search for the FCNC process e+e- → tc(u) → bWc(u). This analysis is sensitive to the leptonic and the hadronic decay modes of the W boson. No evidence for a FCNC process is observed. Upper limits at the 95% confidence level on the single top production cross-section as a function of the centre-of-mass energy are derived. Limits on the anomalous coupling parameters κγ and κZ are determined from these results. © 2001 Elsevier Science B.V. All rights reserve..

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