QCD analyses and determinations of αs in e e- annihilation at energies between 35 and 189 GeV

P Pfeifenschneider; O Biebel; PA MovillaFernández; G Abbiendi; K Ackerstaff; PF Akesson; G Alexander; J Allison; KJ Anderson; S Arcelli; S Asai; SF Ashby; D Axen; G Azuelos; I Bailey; AH Ball; E Barberio; RJ Barlow; JR Batley; S Baumann; T Behnke; KW Bell; G Bella; A Bellerive; S Bentvelsen; S Bethke; A Biguzzi; IJ Bloodworth; P Bock; J Böhme; O Boeriu; D Bonacorsi; M Boutemeur; S Braibant; P Bright-Thomas; L Brigliadori; RM Brown; HJ Burckhart; J Cammin; P Capiluppi; RK Carnegie; AA Carter; JR Carter; CY Chang; DG Charlton; D Chrisman; C Ciocca; PEL Clarke; E Clay; I Cohen; OC Cooke; J Couchman; C Couyoumtzelis; RL Coxe; M Cuffiani; S Dado; GM Dallavalle; S Dallison; R Davis; A de Roeck; P Dervan; K Desch; B Dienes; MS Dixit; M Donkers; J Dubbert; E Duchovni; G Duckeck; IP Duerdoth; PG Estabrooks; E Etzion; F Fabbri; A Fanfani; M Fanti; AA Faust; L Feld; P Ferrari; F Fiedler; M Fierro; I Fleck; A Frey; A Fürtjes; DI Futyan; P Gagnon; JW Gary; G Gaycken; C Geich-Gimbel; G Giacomelli; P Giacomelli; DM Gingrich; D Glenzinski; J Goldberg; W Gorn; C Grandi; K Graham; E Gross; J Grunhaus; M Gruwé; PO Günther; C Hajdu

Journal article

QCD analyses and determinations of αs in e e- annihilation at energies between 35 and 189 GeV

P Pfeifenschneider, O Biebel, PA MovillaFernández, G Abbiendi, K Ackerstaff, PF Akesson, G Alexander, J Allison, KJ Anderson, S Arcelli, S Asai, SF Ashby, D Axen, G Azuelos, I Bailey, AH Ball, E Barberio, RJ Barlow, JR Batley, S Baumann Show all

European Physical Journal C | SPRINGER | Published : 2000

DOI: 10.1007/s100520000432

Abstract

We employ data taken by the JADE and OPAL experiments for an integrated QCD study in hadronic e+e- annihilations at c.m.s. energies ranging from 35 GeV through 189 GeV. The study is based on jet-multiplicity related observables. The observables are obtained to high jet resolution scales with the JADE, Durham, Cambridge and cone jet finders, and compared with the predictions of various QCD and Monte Carlo models. The strong coupling strength, αs, is determined at each energy by fits of script O sign(α2 s) calculations, as well as matched script O sign(α2 s) and NLLA predictions, to the data. Matching schemes are compared, and the dependence of the results on the choice of the renormalization ..

View full abstract