Abstract
The production of D *± mesons in deep inelastic ep scattering has been measured for exchanged photon virtualities 5 < Q 2 < 1000 GeV2, using an integrated luminosity of 363 pb−1 with the ZEUS detector at HERA. Differential cross sections have been measured and compared to next-to-leading-order QCD calculations. The cross-sections are used to extract the charm contribution to the proton structure functions, expressed in terms of the reduced charm cross section, \( \sigma_{\mathrm{red}}^{{c\overline{c}}} \). Theoretical calculations based on fits to inclusive HERA data are compared to the results.
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ArXiv ePrint: 1303.6578
Supported by the US Department of Energy. (1, 37, 56)
Supported by the Italian National Institute for Nuclear Physics (INFN). (3, 4, 8, 17, 18, 39, 40, 43, 49, 50)
Supported by the Science and Technology Facilities Council, UK. (6, 20, 23, 38, 44, 52)
Supported by the German Federal Ministry for Education and Research (BMBF), under contract No. 05 H09PDF. (5)
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Supported by the US National Science Foundation. Any opinion, findings and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation. (11, 41)
Supported by the Polish Ministry of Science and Higher Education as a scientific project No. DPN/N188/DESY/2009. (12)
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Supported by the German Federal Ministry for Education and Research (BMBF), under contract No. 05h09GUF, and the SFB 676 of the Deutsche Forschungsgemeinschaft (DFG). (22)
Supported by the Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT) and its grants for Scientific Research. (24, 32, 42, 46, 47, 48)
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Supported by the Natural Sciences and Engineering Research Council of Canada (NSERC). (31, 51, 57)
Partially supported by the German Federal Ministry for Education and Research (BMBF). (33)
Supported by RF Presidential grant N 3920.2012.2 for the Leading Scientific Schools and by the Russian Ministry of Education and Science through its grant for Scientific Research on High Energy Physics. (34)
Supported by the Netherlands Foundation for Research on Matter (FOM). (36)
Supported by the Israel Science Foundation. (45)
Also funded by Max Planck Institute for Physics, Munich, Germany. (R. Aggarwal, P. Kaur, I. Singh)
Also Senior Alexander von Humboldt Research Fellow at Hamburg University, Institute of Experimental Physics, Hamburg, Germany. (E. Tassi)
Supported by the research grant No. 1 P03B 04529 (2005-2008). (A. Kotanski)
Partially supported by the Polish National Science Centre projects DEC-2011/01/B/ST2/03643 and DEC-2011/03/B/ST2/00220. (W. Slominski)
Now at DESY group FS-CFEL-1. (N. Coppola)
Partially supported by Warsaw University, Poland. (J. Tomaszewska)
Supported by the Alexander von Humboldt Foundation. (O. Turkot, K. Wichmann)
Deceased. (B. A. Dolgoshein, P. F. Ermolov, A. Eskreys)
Supported by DESY, Germany. (V. Aushev, Y. Aushev, V. Bokhonov, N. Zhmak)
Member of National Technical University of Ukraine, Kyiv Polytechnic Institute, Kyiv, Ukraine. (Y. Aushev)
Member of National Technical University of Ukraine, Kyiv, Ukraine. (A. Iudin)
Now at DESY ATLAS group. (N. Kondrashova)
Member of National University of Kyiv - Mohyla Academy, Kyiv, Ukraine. (N. Kovalchuk, A. Trofymov, O. Turkot, N. Zakharchuk)
Alexander von Humboldt Professor; also at DESY and University of Oxford. (B. Foster)
STFC Advanced Fellow. (C. Gwenlan)
This material was based on work supported by the National Science Foundation, while working at the Foundation. (J.J. Whitmore)
Also at Max Planck Institute for Physics, Munich, Germany, External Scientific Member. (H. Abramowicz)
Member of Lódz University, Poland. (W. Perlanski)
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The ZEUS collaboration., Abramowicz, H., Abt, I. et al. Measurement of D*± production in deep inelastic scattering at HERA. J. High Energ. Phys. 2013, 97 (2013). https://doi.org/10.1007/JHEP05(2013)097
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DOI: https://doi.org/10.1007/JHEP05(2013)097