Measurement of D*(+/-) meson production and determination of F-2(c(c)over-bar) at low Q(2) in deep-inelastic scattering at HERA
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Inclusive production of D* mesons in deep-inelastic ep scattering at HERA is studied in the range 5 LT Q(2) LT 100 GeV2 of the photon virtuality and 0.02 LT y LT 0.7 of the inelasticity of the scattering process. The observed phase space for the D* meson is (pT) (D*) GT 1.25 GeV and |eta( D*)| LT 1.8. The data sample corresponds to an integrated luminosity of 348 pb(-1) collected with the H1 detector. Single and double differential cross sections are measured and the charm contribution F-2(c (c) over bar) to the proton structure function F-2 is determined. The results are compared to perturbative QCD predictions at next-to-leading order implementing different schemes for the charm mass treatment and with Monte Carlo models based on leading order matrix elements with parton showers.
Извор:European Physical Journal C. Particles and Fields, 2011, 71, 10
- UK Science and Technology Facilities Council, FNRS-FWO-Vlaanderen, IISN-IIKW, IWT, Interuniversity Attraction Poles Programme, Belgian Science Policy, Polish Ministry of Science and Higher Education [DPN/N168/DESY/2009], Deutsche Forschungsgemeinschaft, VEGA SR [2/7062/7], Swedish Natural Science Research Council, Ministry of Education of the Czech Republic [LC527, INGO-LA09042 and MSM0021620859], Swiss National Science Foundation, CONACYT, Mexico [48778-F], Russian Foundation for Basic Research (RFBR) [1329.2008.2], European Social Fund, Romanian National Authority for Scientific Research [PN 09370101], Ministry of Science of Montenegro [051/3-3352]
ISSN: 1434-6044 (print)