Hadron Spectroscopy

TL;DR

This paper reviews recent lattice QCD results on hadron spectroscopy, focusing on meson states including quarkonium-like XYZ states, near-threshold states, and multi-channel resonances, highlighting advances in theoretical treatment and computational searches.

Contribution

It presents the first rigorous lattice QCD analysis of near-threshold states and coupled-channel simulations, advancing understanding of complex meson resonances.

Findings

Rigorous treatment of $X(3872)$ and $D_s^0(2317)$ states.

Lattice searches for $Z_c^+(3900)$, $X(4140)$, and tetraquark states.

First coupled-channel lattice QCD simulation.

Abstract

Recent results on the hadron spectroscopy from lattice QCD are reviewed with emphasis on the meson sector and in particular on quarkonium-like $XYZ$ states. I report on the first rigorous treatment of the near-threshold states $X(3872)$ and $D_s^0(2317)$, and the lattice searches for $Z_c^+(3900)$, $X(4140)$ and double-charm tetraquark states. Meson resonances in light, strange and charm sector are reviewed, where the resonances masses as well as the strong decay widths are reported. The first lattice QCD simulation of two coupled-channels is discussed.