Measurement of the Photon Structure Function F_2^gamma at Low x

Details Measurement of the Photon Structure Function F_2^gamma at Low x Measurement of the Photon Structure Function F_2^gamma at Low x

1997-08-19

arxiv.org/abs/hep-ex/9708028v1

Phys.Lett.B412:225-234,1997

Physics

High Energy Physics

High Energy Physics - Experiment

13 pages, LaTeX, uses a4p.sty, 3 eps figures included, submitted to Phys. Lett. B

Scientific paper

10.1016/S0370-2693(97)01022-8

Deep inelastic electron-photon scattering is studied using e+e- data collected by the OPAL detector at centre-of-mass energies sqrt{s_ee} ~ M_{Z^0}. The photon structure function F_2^gamma(x,Q^2) is explored in a Q^2 range of 1.1 to 6.6 GeV/c^2 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 F_2^gamma(x,Q^2) at = 1.86 GeV^2 and 3.76 GeV^2 in five logarithmic x bins from 0.0025 to 0.2.

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