Resonant states 3⁺ and 2^- of the Boron isotope ⁸B

The Jost functions, constructed by fitting available partial cross-sections for the elastic p 7 Be scattering with [Formula: see text], are analytically continued to complex energies, where the resonances are located as their zeros. In addition to the resonance energies and widths, the residues of the [Formula: see text]-matrix at the corresponding poles, as well as the Asymptotic Normalization Constants (ANC) are determined. The fitting is done using the semi-analytic representation of the Jost function with proper analytic structure, defined on the Riemann surface whose topology involves not only the square-root but also the logarithmic branching caused by the Coulomb interaction.