Correlation function and the inverse problem in the BD interaction* *This study is partly supported by the National Natural Science Foundation of China (11975083, 12365019, 12275076), the Central Government Guidance Funds for Local Scientific and Technological Development, China (Guike ZY22096024), the Natural Science Foundation of Changsha (kq2208257), the Natural Science Foundation of Hunan province (2023JJ30647), and the Natural Science Foundation

Abstract

We study the correlation functions of the system, which develops a bound state of approximately , using inputs consistent with the state. Then, we address the inverse problem starting from these correlation functions to determine the scattering observables related to the system, including the existence of the bound state and its molecular nature. The important output of the approach is the uncertainty with which these observables can be obtained, considering errors in the correlation functions typical of current values in correlation functions. We find that it is possible to obtain scattering lengths and effective ranges with relatively high precision and the existence of a bound state. Although the pole position is obtained with errors of the order of 50% of the binding energy, the molecular probability of the state is obtained with a very small error of the order of 6%. All these findings serve as motivation to perform such measurements in future runs of high energy hadron collisions.