Speaker
Yong-Liang Ma
(Nanjing University, China)
Description
The structure of the lightest scalar meson remains one of the puzzles in particle and hadron physics. The breaking of scale symmetry in QCD provides a source of the scalar field, dilaton, and establishes the foundation of chiral-scale effective field theory (EFT) where the chiral symmetry is nonlinearly realized but an iso-scalar scalar field is included. The chiral-scale EFT has been extendedly applied in the study of nuclear matter and predicted several novel phenomena. In this talk, I will discuss that it is reasonable to regard this scalar field as the iso-scalar scalar meson field in hadron physics and will analyze its effect in meson-meson, meson-baryon and baryon-baryon scatterings.
Author
Yong-Liang Ma
(Nanjing University, China)