Recent experimental results on inclusive diffractive scattering and on exclusive vector meson production are reviewed. The dynamical picture of hard diffraction emerging in perturbative QCD is highlighted.

We show that a peripheral meson model can explain the large deep inelastic electron-proton scattering rapidity gap events observed at HERA. PACS numbers: 13.60.Hb, 14.40.-n

We describe the behaviour at threshold of S-wave poles of the scattering matrix within a four-parameter model for non-exotic meson-meson scattering. This model accommodates all non-exotic mesons, hence also the light scalar mesons, as resonances and bound states characterised by complex singularities of the scattering amplitude as a function of the total invariant mass. The majority of the full...

It is pointed out, that color-singlet gluon clusters can be formed in hadrons as a consequence of self-organized criticality (SOC) in systems of interacting soft gluons, and that the properties of such spatiotemporal complexities can be probed experimentally by examing inelastic diffractive scattering. Theoretical arguments and experimental evidence supporting the proposed picture are presented...

We proposed a theoretical framework to correlate the topological diagram at quark level and rescattering dynamics hadron level. In framework, both hadronic triangle diagram, topological-scattering which is intermediate structure between are expressed in tensor form. The completeness of confirmed by substructure meson-meson scattering. coefficient each can be derived from total amplitudes consis...

We describe the behaviour at threshold of S-wave poles of the scattering matrix within a four-parameter model for non-exotic meson-meson scattering. This model accommodates all non-exotic mesons, hence also the light scalar mesons, as resonances and bound states characterised by complex singularities of the scattering amplitude as a function of the total invariant mass. The majority of the full...

We discuss two collider processes which combine a diffractively produced \rho ρ meson separated by large rapidity gap from hard exclusive scattering of Pomeron on nucleon, giving rise to lepton pair or second meson. These probe the nucleon quark content described generalized parton distribution...