Colour dipoles and virtual Compton scattering
نویسندگان
چکیده
An analysis of Deeply Virtual Compton Scattering (DVCS) is made within the colour dipole model. We compare and contrast two models for the dipole cross-section which have been successful in describing structure function data. Both models agree with the available cross section data on DVCS from HERA. We give predictions for various azimuthal angle asymmetries in HERA kinematics and for the DVCS cross section in the THERA region.
منابع مشابه
Colour dipoles and deeply virtual Compton scattering
Why DVCS ? On the theory side, we have an explicitly proven factorisation theorem [3], valid for asymptotic Q, which expresses the amplitude as a convolution in perturbatively calculable coefficients with generalised parton distributions. A dipole analysisof DVCS is complementary to this formal QCD analysis: going beyond leading twist, we can, in principle, establish quantitatively a regime in ...
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