Extraction of nuclear coupling constants from data on nuclear charge form factors

A possibility of extracting nuclear coupling constants from data on nuclear charge form factors is discussed. The method exploits analytic properties of form factors in the momentum transfer plane. As an illustration the form factor of⁴He is considered in detail. In this case the value (g_{4_{He^3 He(^3 H)} }^2 /4pi = 16 pm 1) has been obtained in excellent agreement with earlier determinations by means of other methods. Similar analysis of the¹⁶O form factor yields the first estimate of the oxygen-nucleon coupling∶ (g_{16_{O^{15} O(^{15} N)N} }^2 /4pi = 64) .