Résumé du preprint DAPNIA-04-207
| DAPNIA-04-207 |
|---|
| The space-time structure of hard scattering processes (arXiv:hep-ph/0406151) |
| J.-M. Laget |
Recent studies of exclusive electroproduction of vector mesons at JLab make it possible for the first time to play with two independent hard scales: the virtuality $Q^2$ of the photon, which sets the observation scale, and the momentum transfer $t$ to the hadronic system, which sets the interaction scale. They reinforce the description of hard scattering processes in terms of few effective degrees of freedom relevant to the Jlab-Hermes energy range. |
