Abstract

• The purpose of our research is to calculate the energy of hydrogen-like Ξ - Ρb atom for various states by solving the Schrödinger equation. We assumed as Ξ - Ρb atom is liked an ordinary hydrogen atom in which the electron is replaced by a negative xi hyperon. By assuming above approximation, we also calculated the energy of hydrogen-like 81- Pb ionized atom.And then, we determined the radius of hydrogen-like Ξ - Ρb atom to know about their structure. We found that the energy of hydrogen-like Ξ - Ρb atom is greater than 81 Pb ionized atom for various orbits and the inclusion of xi reduces the size of the atom in such a way the smaller radius is obtained. In addition, we observed that the radius of Ξ - Ρb atom is less than nuclear radius for lower orbits. It is found that the existence of atomic state and nuclear state cannot be distinguished in lower orbits. In this way, the existence of atomic and nuclear hybrid state can be found in lower orbits of Ξ - Ρb atom.