Emergence of the $π(1300)$ Resonance from Lattice QCD

Author(s): Haobo Yan (燕浩波), Maxim Mai, Marco Garofalo, Yuchuan Feng, Michael Döring, Chuan Liu (刘川), Liuming Liu (刘柳明), Ulf-G. Meißner, and Carsten Urbach The mass of the lightest hadron in nature, the pion, is one seventh of that of the nucleon and one tenth of the mass of its first excited state, the $π(1300)$. This enormous energy difference opens an interesting window into the confinement of quarks and the structure of the lightest hadrons. In thi… [Phys. Rev. Lett. 136, 141901] Published Wed Apr 08, 2026