Abstract
H1 and ZEUS have published single-differential cross sections for inclusive D ∗±-meson production in deep-inelastic ep scattering at HERA from their respective final data sets. These cross sections are combined in the common visible phase-space region of photon virtuality Q 2 > 5 GeV2, electron inelasticity 0.02 < y < 0.7 and the D ∗± meson’s transverse momentum p T(D ∗) > 1.5 GeV and pseudorapidity |η(D ∗)| < 1.5. The combination procedure takes into account all correlations, yielding significantly reduced experimental uncertainties. Double-differential cross sections d2 σ/dQ 2dy are combined with earlier D ∗± data, extending the kinematic range down to Q 2 > 1.5 GeV2. Perturbative next-to-leading-order QCD predictions are compared to the results.
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ArXiv ePrint: 1503.06042
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H. Abramowicz was External Scientific Member.
Y. Aushev, A. Iudin and R. Shevchenko were Member of National Technical University of Ukraine.
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W. Perlanski was a Member of Lódz University, Poland.
O. Shkola was a Member of National University of Kyiv - Mohyla Academy, Kyiv, Ukraine.
M. Wing was supported by DESY and the Alexander von Humboldt Foundation.
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The H1 and ZEUS collaborations., Abramowicz, H., Abt, I. et al. Combination of differential D∗± cross-section measurements in deep-inelastic ep scattering at HERA. J. High Energ. Phys. 2015, 149 (2015). https://doi.org/10.1007/JHEP09(2015)149
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DOI: https://doi.org/10.1007/JHEP09(2015)149