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Model analysis of the world data on the pion transition form factor

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Model analysis of the world data on the pion transition form factor

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Noguera Puchol, Santiago; Vento Torres, Vicente

Aquest document és un/a article, creat/da en: 2012

Este documento está disponible también en : 10.1140/epja/i2012-12143-1

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 Q(0). 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 Q(2) nonperturbative description together with an additional 1/Q(2) term at the matching scale have a strong influence on the Q(2) behavior up to very high values of Q(2).

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