On the Range of Validity of the Dipole Picture

Abstract

We derive correlated bounds on ratios of deep inelastic structure functions from the dipole picture of photon-hadron scattering at high energies. In particular we consider ratios of the longitudinal structure function, the total structure function and the charm part of the latter. We also consider ratios of total structure functions taken at the same energy but at three different photon virtualities. It is shown that by confronting these bounds with experimental data we can significantly constrain the range of validity of the dipole picture.

arXiv comment17 pages, 11 figures, 1 poem; v2: typos corrected, appendix and figure added

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• The New F_L Measurement from HERA and the Dipole Model
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• The Color Dipole Picture and extracting the ratio of structure functions at small $x$
• Ratio of the structure functions and the color dipole model bound
• The color dipole model bounds with the gluon-gluon recombination correction
• Scale Dependent Pomeron Intercept in Electromagnetic Diffractive Processes
• Ioffe Times in DIS from a Dipole Model Fit
• Physical limits in the Color Dipole Model Bounds
• Heavy quark structure functions from unifying the color dipole picture and double asymptotic scaling approaches
• Reduced cross section and gluon distribution in a momentum-space approach
• The Proton Gluon Distribution from the Color Dipole Picture
• On the Limitations of the Color Dipole Picture
• One-to-One correspondence of soft and hard Pomeron with the CDP of the gluon density at low $x$