Elsevier

Physics Letters B

Volume 686, Issues 2–3, 22 March 2010, Pages 91-100
Physics Letters B

Measurement of the D± meson production cross section and F2cc¯ at high Q2 in ep scattering at HERA

Dedicated to the memory of our dear friend and colleague, Beate Naroska
https://doi.org/10.1016/j.physletb.2010.02.024Get rights and content
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Abstract

The inclusive production of D±(2010) mesons in deep-inelastic e±p scattering is measured in the kinematic region of photon virtuality 100<Q2<1000 GeV2 and inelasticity 0.02<y<0.7. Single and double differential cross sections for inclusive D meson production are measured in the visible range defined by |η(D)|<1.5 and pT(D)>1.5 GeV. The data were collected by the H1 experiment during the period from 2004 to 2007 and correspond to an integrated luminosity of 351 pb1. The charm contribution, F2cc¯, to the proton structure function F2 is determined. The measurements are compared with QCD predictions.

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Supported by the UK Science and Technology Facilities Council, and formerly by the UK Particle Physics and Astronomy Research Council.

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Supported by FNRS-FWO-Vlaanderen, IISN-IIKW and IWT and by Interuniversity Attraction Poles Programme, Belgian Science Policy.

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Partially Supported by Polish Ministry of Science and Higher Education, grant PBS/DESY/70/2006.

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Supported by the Bundesministerium für Bildung und Forschung, FRG, under contract numbers 05H09GUF, 05H09VHC, 05H09VHF, 05H16PEA.

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Supported by VEGA SR grant No. 2/7062/ 27.

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Supported by the Swedish Natural Science Research Council.

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Supported by CONACYT, México, grant 48778-F.

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Russian Foundation for Basic Research (RFBR), grant No. 1329.2008.2.

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Supported by the Deutsche Forschungsgemeinschaft.

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Supported by the Ministry of Education of the Czech Republic under the projects LC527, INGO-1P05LA259 and MSM0021620859.

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Supported by the Swiss National Science Foundation.

1

Also at Physics Department, National Technical University, Zografou Campus, GR-15773 Athens, Greece.

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Also at Rechenzentrum, Universität Wuppertal, Wuppertal, Germany.

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Also at University of P.J. Šafárik, Košice, Slovak Republic.

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Also at CERN, Geneva, Switzerland.

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Also at Max-Planck-Institut für Physik, München, Germany.

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Also at Comenius University, Bratislava, Slovak Republic.

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Also at DESY and University Hamburg, Helmholtz Humboldt Research Award.

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Also at Faculty of Physics, University of Bucharest, Bucharest, Romania.

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Also at Ulaanbaatar University, Ulaanbaatar, Mongolia.

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Supported by the Initiative and Networking Fund of the Helmholtz Association (HGF) under the contract VH-NG-401.

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This project is co-funded by the European Social Fund (75%) and National Resources (25%) – (EPEAEK II) – PYTHAGORAS II.