Experimental Knowledge of the Real Parts of the K±p Forward Scattering Amplitudes

A compilation of experimentally determined values of the real parts of the K^±p forward scattering amplitudes is given in a form in which these data may be used directly in analyses of forward dispersion relations. The methods of determining these real parts from experimental data are briefly reviewed and a survey of K^±p low-energy parametrizations and phase shift analyses is given. A summary is given of the theoretical determinations of the real parts.