Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10726310 | Progress in Particle and Nuclear Physics | 2012 | 5 Pages |
Abstract
We propose QCD factorization approach for description of the soft spectator scattering contribution. It is expected that such contribution is very important for description of the many exclusive processes at moderate values of Q2. Assuming the dominance of this mechanism we provide qualitative consideration of the proton form factors in the spacelike and timelike regions. Using the same approach we also provide estimates of the cross sections for the processes γγâppÌ and ppÌâγγ at large energy and momentum transfer.
Keywords
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Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
N. Kivel, M. Vanderhaeghen,