Transition Distribution Amplitudes for gamma* gamma collisions

Details Transition Distribution Amplitudes for gamma* gamma collisions Transition Distribution Amplitudes for gamma* gamma collisions

2007-10-05

arxiv.org/abs/0710.1294v1

Nucl.Phys.Proc.Suppl.184:239-242,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk given at International Conference on the Structure and Interactions of the Photon (Photon 2007), 9-13 Jul 2007, Paris, Fr

Scientific paper

10.1016/j.nuclphysbps.2008.09.17

We study the exclusive production of pi-pi and rho-pi in hard gamma* gamma scattering in the forward kinematical region where the virtuality of one photon provides us with a hard scale in the process. The newly introduced concept of Transition Distribution Amplitudes (TDA) is used to perform a QCD calculation of these reactions thanks to two simple models for TDAs. The sizable cross sections for rho-pi and pi-pi production may be tested at intense electron-positron colliders such as CLEO and B factories (Belle and BaBar).

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