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arXiv · 0710.1294

Transition Distribution Amplitudes for gamma* gamma collisions

J. P. Lansberg·B. Pire·L. Szymanowski
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Abstract

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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J. P. Lansberg, B. Pire, L. Szymanowski. 2007-10-05. Transition Distribution Amplitudes for gamma* gamma collisions. https://doi.org/10.1016/j.nuclphysbps.2008.09.172

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