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arXiv · hep-ex/0307068

Measurement of the open-charm contribution to the diffractive proton structure function

ZEUS Collaboration·S. Chekanov
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Abstract

Production of D*+/-(2010) mesons in diffractive deep inelastic scattering has been measured with the ZEUS detector at HERA using an integrated luminosity of 82 pb^{-1}. Diffractive events were identified by the presence of a large rapidity gap in the final state. Differential cross sections have been measured in the kinematic region 1.5 < Q^2 < 200 GeV^2, 0.02 < y < 0.7, x_{IP} < 0.035, beta < 0.8, p_T(D*+/-) > 1.5 GeV and |η(D*+/-)| < 1.5. The measured cross sections are compared to theoretical predictions. The results are presented in terms of the open-charm contribution to the diffractive proton structure function. The data demonstrate a strong sensitivity to the diffractive parton densities.

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ZEUS Collaboration, S. Chekanov. 2003-11-04. Measurement of the open-charm contribution to the diffractive proton structure function. https://doi.org/10.1016/j.nuclphysb.2003.09.001

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