摘要：In the last decades, femtoscopic measurements from heavy-ion collisions have become a popular tool to investigate the strong interactions between hadrons. The key observables measured in such experiments are the two-hadron momentum correlations, which depend on the production mechanism of hadron pairs and the final-state interactions. Given the complexity of ultra-relativistic collision experiments, the source term describing the production mechanism can only be modeled phenomenologically based on numerous assumptions. The commonly employed approach for analyzing femtoscopic data relies on the Koonin-Pratt formula, which relates the measured correlation functions with the relative wave function of an outgoing hadron pair and a source term that is assumed to be universal. Here, I critically examine this universality assumption and show that for strongly interacting particles such as nucleons, the interpretation of femtoscopic measurements suffers from a potentially large intrinsic uncertainty. I also comment on the ongoing efforts to explore three-body interactions using this experimental technique.
个人简介：Morimitsu Tanimoto obtained his PhD degree in 1976 from Hiroshima University and he is now an Emeritus Professor of Niigata University. He was the Dean of the Faculty of Science at Niigata University from 2009 to 2012, and the Director of the Institute of Science and Technology at Niigata University from 2012 to 2014. In 2015, he was awarded the 20th Outstanding Paper Award of the Physical Society of Japan.