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Kramer, G.; Spiesberger, H.
Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)2009
Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)2009
AbstractAbstract
[en] We have calculated the next-to-leading order cross sections for the inclusive production of D*-mesons in ep collisions at HERA for finite, although very small Q2. In this Q2-range, the same approximations as for photoproduction can be used. Our calculation is performed in the general-mass variable-flavour-number scheme. In this approach, large logarithms of the charm transverse momentum are resummed and finite terms depending on m2/pT2 are kept in the hard scattering cross sections. The theoretical results are compared with recent data from the ZEUS collaboration at HERA. On average, we find good agreement. (orig.)
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May 2009; 10 p; MZ-TH--09-15; ISSN 0418-9833; 

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Report
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Numerical Data
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ANTILEPTONS, ANTIMATTER, ANTIPARTICLES, BASIC INTERACTIONS, BOSONS, CHARM PARTICLES, CHARMED MESONS, CROSS SECTIONS, DATA, ELECTROMAGNETIC INTERACTIONS, ELECTRON-NUCLEON INTERACTIONS, ELEMENTARY PARTICLES, ENERGY RANGE, FERMIONS, FIELD THEORIES, GEV RANGE, HADRONS, INCLUSIVE INTERACTIONS, INFORMATION, INTERACTIONS, LEPTON-BARYON INTERACTIONS, LEPTON-HADRON INTERACTIONS, LEPTON-NUCLEON INTERACTIONS, LEPTON-PROTON INTERACTIONS, LEPTONS, LINEAR MOMENTUM, MATTER, MESONS, NUMERICAL DATA, PARTICLE INTERACTIONS, PARTICLE PRODUCTION, QUANTUM FIELD THEORY, VECTOR MESONS
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