ENERGY SHIFTS AND WIDTHS OF KAONIC ATOMS

Microscopic calculations of the energy shifts and widths of kaonic atoms are carried out using a low-energy kaon-nucleon T matrix which is parametrized by a single Yukawa function. The (1405) resonance is not included explicitly but only via its influence on the T matrix at threshold. The experimental values for the shifts and widths are approximately reproduced using a range of 0.66 fm for both the real and imaginary parts of the T matrix, although the use of different ranges for the two parts may result in an improvement of the fit. Medium corrections are negligibly small. © 1990 The American Physical Society.