Meson Form-factors and Wave-functions with Wilson fermions
نویسندگان
چکیده
Results for semi-leptonic form-factors for processes like D→ Klν and the Bethe-Salpeter amplitudes (BSA) for pion and rho mesons are presented. The form-factor data is consistent with previous calculations. We find that the long distance fall-off of BSA for both π and ρ is very well fit by an exponential, but surprisingly the effective mass governing this fall-off is lighter than the pion’s. Lastly, by studying the dependence of ρ polarization on separation direction we show that there is a measureable l = 2 state in addition to l = 0 in the BSA for the rho.
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