Meson loops and the gD*Dpi coupling

AUTOR(ES)

Durães, F. O., Navarra, F.S., Nielsen, M., Robilotta, M.R.

FONTE

Brazilian Journal of Physics

DATA DE PUBLICAÇÃO

2006-12

RESUMO

The D*Dpi form factor is evaluated at low and moderate Q² in a hadronic loop model, for off-shell D mesons. The results contain arbitrary constants, which are fixed so as to match a previous QCD sum rule calculation valid at higher Q². The form factor obtained in this way is used to extract the coupling constant, which is in very good agreement with the experimental value.

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