We describe the current status of the diffractive vector meson production calculations within the kt factorization approach. Since the amplitude of the vector meson production off a proton is expressed via the differential gluon structure function (DGSF), we take a closer look at the latter and present results of our new improved determination of the DGSF from the structure function F2p. Having determined the differential glue, we proceed to the kt factorization results for the production of various vector mesons. We argue that the properties of the vector meson production can reveal the internal spin-angular and radial structure of the vector meson.
PACS numbers: 13.60.Le
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