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Geometric Scaling of $F_2$ and $F_2^c$ in data and QCD Parametrisations
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abstract
The scaling properties at low $x$ of the proton DIS cross section and its charm component are analyzed with the help of the quality factor method. Scaling properties are tested both in the deep inelastic scattering data and in the structure functions reconstructed from CTEQ, MRST and GRV parametrisations of parton density functions. The results for DIS cross sections are fully compatible between data and parametrisations. Even with larger error bars, the charm component data favors the same geometric scaling properties as the ones of inclusive DIS. This is not the case for all parametrisations of the charm component.
Forward citations
Cited by 2 Pith papers
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Heavy quark distributions from the Color Dipole Picture
The color dipole model with collinear generalized DAS reproduces HERA reduced cross sections for charm production, yields an effective pomeron intercept, and shows symmetry in scaling variable η between saturation and...
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Effects of heavy quarks in the dipole cross section with the KLN model
In the KLN model, heavy quark masses in the Bjorken variable shift where saturation appears, with protons losing visible saturation and nuclei retaining it at x around 10^-6 and large dipole sizes.
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