THE HADRONIC PHYSICS OF PHOTON-PHOTON COLLISIONS

The Hadronic Physics of Photon-photon Collisions*

Isolated-photon Production in Polarized Hadronic Collisions

The production of photons in hadronic collisions is quite interesting under two different aspects. Since the photon couples directly only to quarks, photon signals can be used to study the hard dynamics in a cleaner way with respect to processes where only hadrons are involved; the obvious drawback is that promptphoton cross sections are much smaller than say jet cross sections. Secondly, photo...

Hadronic structure from two photon collisions

We briefly describe what a two photon capability with KLOE2 can measure and discuss what this will teach us about the world of light hadrons. PACS. 13.40.Lq, 13.60.Le, 13.75.Lb, 14.40.Cs

Two-Photon Physics in Hadronic Processes

Two-photon exchange contributions to elastic electron-scattering are reviewed. The apparent discrepancy in the extraction of elastic nucleon form factors between unpolarized Rosenbluth and polarization transfer experiments is discussed, as well as the understanding of this puzzle in terms of two-photon exchange corrections. Calculations of such corrections both within partonic and hadronic fram...

Photon-photon Collisions*

Studies of photon-photon collisions are reviewed with particular emphasis on new results reported to this conference. These include results on light meson spectroscopy and deep inelastic ey scattering. Considerable work has now been accumulated on resonance production by yy collisions. Preliminary high statistics studies of the photon structure function F$(x,Q2) are given and comments are made ...