Measurement of neutral-current four-fermion production at LEP2

G Abbiendi; C Ainsley; PF Åkesson; G Alexander; J Allison; P Amaral; G Anagnostou; KJ Anderson; S Arcelli; S Asai; D Axen; G Azuelos; I Bailey; E Barberio; RJ Barlow; RJ Batley; P Bechtle; T Behnke; KW Bell; PJ Bell; G Bella; A Bellerive; G Benelli; S Bethke; O Biebel; IJ Bloodworth; O Boeriu; P Bock; D Bonacorsi; M Boutemeur; S Braibant; L Brigliadori; RM Brown; K Buesser; HJ Burckhart; S Campana; RK Carnegie; B Caron; AA Carter; JR Carter; CY Chang; DG Charlton; A Csilling; M Cuffiani; S Dado; GM Dallavalle; S Dallison; A de Roeck; EA de Wolf; K Desch; B Dienes; M Donkers; J Dubbert; E Duchovni; G Duckeck; IP Duerdoth; E Elfgren; E Etzion; F Fabbri; L Feld; P Ferrari; F Fiedler; I Fleck; M Ford; A Frey; A Fürtjes; P Gagnon; JW Gary; G Gaycken; C Geich-Gimbel; G Giacomelli; P Giacomelli; M Giunta; J Goldberg; 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; RJ Homer; D Horváth; R Howard; P Hüntemeyer; P Igo-Kemenes

Journal article

Measurement of neutral-current four-fermion production at LEP2

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

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics | ELSEVIER SCIENCE BV | Published : 2002

DOI: 10.1016/S0370-2693(02)02468-1

Open access

Abstract

Four-fermion final states qqe+e- and qqμ+μ- from neutral-current interactions in e+e- collisions are studied in the OPAL detector at LEP at centre-of-mass energies from 183 GeV to 209 GeV. The data analysed correspond to a total integrated luminosity of about 650 pb-1 recorded from 1997 to 2000. Corresponding to the acceptance of the OPAL detector, a signal definition is applied requiring both leptons to have a scattering angle satisfying \cos θ\ < 0.95. Further requirements are made on the invariant masses of the fermion pairs. The extracted cross-sections for the processes e+e- → qqe+e- and e+e- → qqμ+μ- are consistent with the expectations from the Standard Model. © 2002 Elsevier Science ..

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