On the Asymptotic Behavior of Electromagnetic Form Facors

Electromagnetic form factors for composite particles, are discussed. It is shown that the' form factor of 1l'-meson behaves like (log t) n/t 2 Cn = 1 or 2) for the large positive momentum squared t when the 1l'-meson is assumed to be a bound state of the nucleon and anti-nucleon system. For the spinless nucleon this is verified without any approximation other than the B-S equation with a general kernel and for this case it is shown that n = 1 Some approxi mations are taken when we include the spin of the nucleon, and we find n=2for this case, but it is argued that this conclusion may be true in general. Some discussions of the large t behavior of the form factor of nucleon in a bound state are added.