Antiproton-proton interaction and related hadron physics

Abstract

Antinucleon-nucleon interaction has been established in chiral effective field theory. The strong threshold enhancement observed in the reactions $J/\psi \to \gamma \overline{p}p$ and $e^{+}{e}^{-}\to \overline{p}p$ are interpreted by the strong $\overline{p}p$ interaction. Concerning the channel $J/\psi \to \gamma \overline{p}p$, the topic on the $\overline{p}p$ bound state is also discussed.

Comments: 9 pages, 5 figures, prepared for proceeding of the conference "Chiral Dynamics 2015", held from 29 June 2015 to 03 July 2015, Pisa, Italy