Gluon Saturation in the Colour Dipole Model?
نویسنده
چکیده
We use data on the deep inelastic structure function F2 in order to constrain the cross-section for scattering a colour dipole off a proton. The data seem to prefer parameterisations which include saturation effects. That is they indicate that the strong rise with energy of the dipole cross-section, which holds for small dipoles, pertains only for r < rs(x) where rs(x) decreases monotonically as x decreases. Subsequent predicitions for the diffractive structure function F D(3) 2 also hint at saturation, although the data are not really sufficiently accurate.
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