Determination of the LEP beam energy using radiative fermion-pair events

G Abbiendi; C Ainsley; PF Akesson; G Alexander; J Allison; P Amaral; G Anagnostou; KJ Anderson; S Asai; D Axen; I Bailey; E Barberio; T Barillari; RJ Barlow; RJ Batley; P Bechtle; T Behnke; KW Bell; PJ Bell; G Bella; A Bellerive; G Benelli; S Bethke; O Biebel; O Boeriu; P Bock; M Boutemeur; S Braibant; RM Brown; HJ Burckhart; S Campana; P Capiluppi; RK Carnegie; AA Carter; JR Carter; CY Chang; DG Charlton; C Ciocca; A Csilling; M Cuffiani; S Dado; A De Roeck; EA De Wolf; K Desch; B Dienes; M Donkers; J Dubbert; E Duchovni; G Duckeck; IP Duerdoth; E Etzion; F Fabbri; P Ferrari; F Fiedler; I Fleck; M Ford; A Frey; P Gagnon; JW Gary; C Geich-Gimbel; G Giacomelli; P Giacomelli; M Giunta; J Goldberg; E Gross; J Grunhaus; M Gruwe; PO Gunther; A Gupta; C Hajdu; M Hamann; GG Hanson; A Harel; M Hauschild; CM Hawks; R Hawkings; RJ Hemingway; G Herten; RD Heuer; JC Hill; K Hoffman; D Horvath; P Igo-Kemenes; K Ishii; H Jeremie; P Jovanovic; TR Junk; J Kanzaki; D Karlen; K Kawagoe; T Kawamoto; RK Keeler; RG Kellogg; BW Kennedy; S Kluth; T Kobayashi; M Kobel; S Komamiya; T Kramer; P Krieger; J von Krogh; T Kuhl; M Kupper; GD Lafferty; H Landsman; D Lanske; D Lellouch; J Letts; L Levinson; J Lillich; SL Lloyd; FK Loebinger; J Lu; A Ludwig; J Ludwig; W Mader; S Marcellini; A Martin; G Masetti; T Mashimo; P Mattig; J McKenna; RA McPherson; F Meijers; W Menges; FS Merritt; H Mes; N Meyer; A Michelini; S Mihara; G Mikenberg; DJ Miller; W Mohr; T Mori; A Mutter; K Nagai; I Nakamura; H Nanjo; HA Neal; R Nisius; SW O'Neale; A Oh; MJ Oreglia; S Orito; C Pahl; G Pasztor; JR Pater; JE Pilcher; J Pinfold; DE Plane; O Pooth; M Przybycien; A Quadt; K Rabbertz; C Rembser; P Renkel; JM Roney; AM Rossi; Y Rozen; K Runge; K Sachs; T Saeki; EG Sarkisyan; AD Schaile; O Schaile; P Scharff-Hansen; J Schieck; T Schorner-Sadenius; M Schroder; M Schumacher; R Seuster; TG Shears; BC Shen; P Sherwood; A Skuja; AM Smith; R Sobie; S Soldner-Rembold; F Spano; A Stahl; D Strom; R Strohmer; S Tarem; M Tasevsky; R Teuscher; MA Thomson; E Torrence; D Toya; P Tran; I Trigger; Z Trocsanyi; E Tsur; MF Turner-Watson; I Ueda; B Ujvari; CF Vollmer; P Vannerem; R Vertesi; M Verzocchi; H Voss; J Vossebeld; CP Ward; DR Ward; PM Watkins; AT Watson; NK Watson; PS Wells; T Wengler; N Wermes; GW Wilson; JA Wilson; G Wolf; TR Wyatt; S Yamashita; D Zer-Zion; L Zivkovic

Journal article

Determination of the LEP beam energy using radiative fermion-pair events

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

PHYSICS LETTERS B | ELSEVIER | Published : 2004

DOI: 10.1016/j.physletb.2004.10.046

Abstract

We present a determination of the LEP beam energy using "radiative return" fermion-pair events recorded at centre-of-mass energies from 183 to 209 GeV. We find no evidence of a disagreement between the OPAL data and the LEP Energy Working Group's standard calibration. Including the energy-averaged 11 MeV uncertainty in the standard determination, the beam energy we obtain from the OPAL data is higher than that obtained from the LEP calibration by 0±34(stat.)±27(syst.)MeV. © 2004 Elsevier B.V. All rights reserved.