Pion-Photon Transition Distribution Amplitudes
Abstract
Description
The newly introduced Transition Distribution Amplitudes (TDAs) are discussed for the $π$-$γ$ transitions. Relations between $π$-$γ$ and $γ$-$π$ TDAs for different cases are given. Numerical values for the $π$-$γ$ TDAs in different models are compared. GPD's features are extended to TDAs and the role of PCAC highlighted. We give hints for the evaluation of cross sections for meson pair production in our approach.
To appear in the proceedings of the Joint Meeting Heidelberg-Liege-Paris-Wroclaw (HLPW08), Spa, Belgium, 6-8 March 2008; uses aip-6s.clo, aipproc.cls and aipxfm.sty (included)
To appear in the proceedings of the Joint Meeting Heidelberg-Liege-Paris-Wroclaw (HLPW08), Spa, Belgium, 6-8 March 2008; uses aip-6s.clo, aipproc.cls and aipxfm.sty (included)