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The extraction of the S-wave kaon-nucleon scattering lengths a0 and a1 from acombined analysis of existing kaonic hydrogen and synthetic deuterium data hasbeen carried out within the framework of a low-energy effective field theory.It turns out that with the present DEAR central values for the kaonic hydrogenground-state energy and width, a solution for a0 and a1 exists only in arestricted domain of input values for the kaon-deuteron scattering length.Consequently, measuring this scattering length imposes stringent constraints onthe theoretical description of the kaon-deuteron interactions at low energies.Comment: 9 pages, 2 postscript figure

Kaon–nucleon scattering lengths from kaonic deuterium experiments