, 48:143,
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Model analysis of the world data on the pion transition form factor

Abstract

We discuss the impact of recent Belle data on our description of the pion transition form factor based on the assumption that a perturbative formalism and a nonperturbative one can be matched in a physically acceptable manner at a certain hadronic scale Q0. We discuss the implications of the different parameters of the model in comparing with world data and conclude that within experimental errors our description remains valid. Thus we can assert that the low Q2 nonperturbative description together with an additional 1/Q 2 term at the matching scale have a strong influence on the Q2 behavior up to very high values of Q2.

This article is published with open access at Springerlink.com
Communicated by S. Hands