Level rearrangement in K- p system

Abstract

We studied the level shifts in the $K^{-}p$ system caused by the interplay of strong nuclear and long range Coulomb potentials. We observed a level rearrangement in the system and found that the $1s$ shift of kaonic hydrogen is in fact ``attractive''. In addition, we demonstrated that absorption in the strong antikaon-nucleon interaction does not destroy the level rearrangement.

11 pages, 3 figures, 3 tables