| Title: | MEASUREMENT OF THE CHARM STRUCTURE FUNCTION OF THE PHOTON AT LEP |
| DOI No: | 10.1142/9789812777157_0003 |
| Source: | PHOTON 2001 (pp 14-18)
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| Author(s): | Á. CSILLING
On leave of absence from KFKI Research Institute for Particle and Nuclear Physics, H-1525 Budapest, P.O.Box 49, Hungary.
CERN, CH-1211, Geneva, Switzerland
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| Abstract: | Charm production is studied in deep-inelastic electron-photon scattering using OPAL data at e+e- centre-of-mass energies from 183 to 209 GeV. Charm quarks are identified by exclusive reconstruction of D* mesons. The cross-section of D* production is measured in a restricted kinematic region, and then extrapolated to the total charm production cross-section and the charm structure function of the photon. For x > 0.1 the measurement is well described by Monte Carlo models and perturbative QCD calculations but for x < 0.1 the predictions are lower than the data both in the directly measured region and after the extrapolation. |
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