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arXiv · hep-ph/0302203

Novel features in exclusive vector--meson production

M. A. Perfilov·S. M. Troshin·N. E. Tyurin
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Abstract

It is shown that the universality of the initial and final state interactions responsible for the transition between the on-- and off--mass shell states leads to the energy independence of the ratio of exclusive $ρ$ electroproduction cross section to the total cross section. It is demonstrated that the above universality and explicit mass dependence of the exponent in the power--like energy behavior of the cross-section obtained in the approach based on unitarity is in a quantitative agreement with the high--energy HERA experimental data. We discuss also HERA results on angular distributions of vector--meson production.

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M. A. Perfilov, S. M. Troshin, N. E. Tyurin. 2003-03-07. Novel features in exclusive vector--meson production. https://doi.org/10.1103/physrevd.68.056008

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