Studying QCD factorizations in exclusive gamma* gamma* -> rho0L rho0L
Abstract
The exclusive process e+ e- -> e+ e- rho0L rho0L allows to study various dynamics and factorization properties of perturbative QCD. At moderate energy, we demonstrate how collinear QCD factorization emerges, involving generalized distribution amplitudes (GDA) and transition distribution amplitudes (TDA). At higher energies, in the Regge limit of QCD, we show that it offers a promising probe of the BFKL resummation effects to be studied at the International Linear Collider (ILC).
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