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This is the second of two papers in which we study real and virtual photon–proton scattering in a nonperturbative framework. In the first paper we have identified the leading contributions to this process at high energies and have derived expressions for them which take into account the renormalisation of the photon–quark–antiquark vertex. In the present paper we investigate the approximations and...
This is the first of two papers in which we study real and virtual photon–proton scattering in a nonperturbative framework. We classify different contributions to this process and identify the leading contributions at high energies. We then study the renormalisation of the photon–quark–antiquark vertex that occurs in the leading contributions. We find something like the dipole picture in one of these...
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