Electroproduction of vector mesons: factorization of end-point contributions

Original Paper

Abstract.

The end-point contributions in the quark longitudinal momentum fraction of the virtual photon (\(\gamma^*\)) to vector meson (V) impact factor to the diffractive electroproduction amplitude can be factorized in terms of a generalized parton evolution of the target parton distribution. This result is used to model the helicity amplitudes \(\gamma^* p \rightarrow V p\) in terms of small x generalized parton distributions.

Keywords

Impact Factor Vector Meson Parton Distribution Virtual Photon Momentum Fraction 

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Copyright information

© Springer-Verlag Berlin/Heidelberg 2003

Authors and Affiliations

  1. 1.Naturwissenschaftlich-Theoretisches Zentrum und Institut für Theoretische PhysikUniversität LeipzigLeipzigGermany

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