Electromagnetic properties of heavy mesons in heavy quark limit

The electromagnetic (EM) form factors of the pseudoscalar and vector mesons are calculated in the light-front framework. We extract these form factors from the relevant matrix elements directly, instead of choosing the Breit frame. The results show that the charge radius of the meson are related to both the first and second longitudinal momentum square derivative of the mo mentum distribution function. In addition, the static properties of the EM form factors and the heavy quark symmetry of the charge radii are checked a nalytically when we take the heavy quark limit. (C) 2001 Published by Elsev ier Science B.V.