Measurement of the photon structure function Fγ2 at low x

K Ackerstaff; G Alexander; J Allison; N Altekamp; KJ Anderson; S Anderson; S Arcelli; S Asai; D Axen; G Azuelos; AH Ball; E Barberio; T Barillari; RJ Barlow; R Bartoldus; JR Batley; S Baumann; J Bechtluft; C Beeston; T Behnke; AN Bell; KW Bell; G Bella; S Bentvelsen; S Bethke; O Biebel; A Biguzzi; SD Bird; V Blobel; IJ Bloodworth; JE Bloomer; M Bobinski; P Bock; D Bonacorsi; M Boutemeur; BT Bouwens; S Braibant; L Brigliadori; RM Brown; HJ Burckhart; C Burgard; R Bürgin; P Capiluppi; RK Carnegie; AA Carter; JR Carter; CY Chang; DG Charlton; D Chrisman; PEL Clarke; I Cohen; JE Conboy; OC Cooke; M Cuffiani; S Dado; C Dallapiccola; GM Dallavalle; R Davies; S de Jong; LA del Pozo; K Desch; B Dienes; MS Dixit; E do Couto e Silva; M Doucet; E Duchovni; G Duckeck; IP Duerdoth; D Eatough; JEG Edwards; PG Estabrooks; HG Evans; M Evans; F Fabbri; M Fanti; AA Faust; F Fiedler; M Fierro; HM Fischer; I Fleck; R Folman; DG Fong; M Foucher; A Fürtjes; DI Futyan; P Gagnon; JW Gary; J Gascon; SM Gascon-Shotkin; NI Geddes; C Geich-Gimbel; T Geralis; G Giacomelli; P Giacomelli; R Giacomelli; V Gibson; WR Gibson; DM Gingrich; D Glenzinski; J Goldberg

Journal article

Measurement of the photon structure function Fγ2 at low x

K Ackerstaff, G Alexander, J Allison, N Altekamp, KJ Anderson, S Anderson, S Arcelli, S Asai, D Axen, G Azuelos, AH Ball, E Barberio, T Barillari, RJ Barlow, R Bartoldus, JR Batley, S Baumann, J Bechtluft, C Beeston, T Behnke Show all

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics | ELSEVIER SCIENCE BV | Published : 1997

DOI: 10.1016/S0370-2693(97)01022-8

Open access

Abstract

Deep inelastic electron-photon scattering is studied using e+e- data collected by the OPAL detector at centre-of-mass energies √see ≈ Mz0. The photon structure function Fγ2(x,Q2) is explored in a Q2 range of 1.1 to 6.6 GeV2 at lower x values than ever before. To probe this kinematic region events are selected with a beam electron scattered into one of the OPAL luminosity calorimeters at scattering angles between 27 and 55 mrad. A measurement is presented of the photon structure function Fγ2(x,Q2) at 〈Q2〉 = 1.86 GeV2 and 3.76 GeV2 in five logarithmic x bins from 0.0025 to 0.2. © 1997 Elsevier Science B.V.