Speaker
Adrien Besse
(LPT Orsay)
Description
We discuss the high-energy exclusive electroproduction of rho
mesons, for both longitudinal and transversal polarizations.
The theoretical description of the cross-section is based on the
perturbative calculations of the transition gamma*L -> rhoL and gamma*T
-> rhoT, i.e. impact factors, within the collinear factorization of QCD.
We show how these impact factors can be related to the
dipole-nucleon scattering amplitude. This permits us to rely for
phenomenological estimations on several existing models for the
dipole/nucleon cross-section, already constrained by the fits performed on
DIS inclusive and diffractive structure functions. We will then present
the comparison of our predictions with HERA data.
Primary author
Adrien Besse
(LPT Orsay)
Co-authors
Lech Szymanowski
(Soltan Institute for Nuclear Studies)
Samuel Wallon
