The Decay Constants of New Pseudoscalar Mesons
M. Idà · Progress of Theoretical Physics · 1979
The decay constant of the ηc-meson is estimated by assuming spectral-function sum rules of Weinberg type in the one-pole approximation. Those of the D- and the F-meson are then obtained in terms of additivity relations derived by a current-algebraic method. It is found that FD and FF are almost equal and that (FD/Fπ)2 is about 3.