A method for determining the pion-nucleon coupling constant f² by the application of an interior dispersion relation to the B⁽⁺⁾πN scattering amplitude is presented and its advantages over other dispersion relation techniques are discussed. The method is used to calculate f² for two sets of phase shifts: CERN 71 of Almehed and Lovelace and a modified version of the Carter, Bugg, and Carter solution, to obtain f²=(81.5±1.5)×10^-3 and f²=(79.5±1.0)×10^-3, respectively.
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Hite et al. (1975) studied this question.
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