Abbiendi, G;
Ainsley, C;
Åkesson, PF;
Alexander, G;
Allison, J;
Amaral, P;
Anagnostou, G;
... Hoffman, K; + view all
(2002)
Measurement of the charm structure function F_{2,c)^{γ} of the photon at LEP.
Physics Letters B
, 539
(1-2)
pp. 13-24.
10.1016/S0370-2693(02)01999-8.
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Abstract
The production of charm quarks is studied in deep-inelastic electron–photon scattering using data recorded by the OPAL detector at LEP at nominal e⁺e⁻ centre-of-mass energies from 183 to 209 GeV. The charm quarks have been identified by full reconstruction of charged D* mesons using their decays into D⁰π with the D⁰ observed in two decay modes with charged particle final states, Kπ and Kπππ. The cross-section σ^{D*} for production of charged D* in the reaction e⁺e⁻→e⁺e⁻D*Χ is measured in a restricted kinematical region using two bins in Bjorken x, 0.0014<x<0.1 and 0.1<x<0.87. From σ^{D*} the charm production cross-section σ(e⁺e⁻→e⁺e⁻ccΧ) and the charm structure function of the photon F_{2,c}^{γ} are determined in the region 0.0014<x<0.87 and 5<Q²<100GeV². For x>0.1 the perturbative QCD calculation at next-to-leading order agrees perfectly with the measured cross-section. For x<0.1 the measured cross-section is 43.8±14.3±6.3±2.8 pb with a next-to-leading order prediction of 17.0⁺²·⁹_₂.₃ pb.
| Type: | Article |
|---|---|
| Title: | Measurement of the charm structure function F_{2,c)^{γ} of the photon at LEP |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/S0370-2693(02)01999-8 |
| Publisher version: | https://doi.org/10.1016/S0370-2693(02)01999-8 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/9839 |
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