Hadron spectroscopy and interactions

TL;DR

This paper reviews recent advances in lattice QCD methods for studying hadron interactions and spectroscopy, emphasizing finite-volume techniques and recent findings on charmed and doubly heavy tetraquarks.

Contribution

It provides a comprehensive overview of current methods and recent experimental results in hadron spectroscopy, highlighting progress in understanding exotic states.

Findings

Advances in finite-volume spectroscopy methods.

Recent lattice QCD results on charmed mesons.

Evidence for exotic tetraquark states.

Abstract

In recent years, lattice QCD calculations of hadron spectroscopy have concentrated on resonances and shallow bound states detected via poles in two- and three-hadron scattering amplitudes. Hadron interactions have therefore become a key focus. In these proceedings, I review the current state of the art and recent advances in methods for studying hadron interactions via finite-volume spectroscopy and finite-volume quantization conditions. I will also review recent spectroscopy studies and results presented at Lattice 2025, with a focus on charmed mesons, the doubly charmed tetraquark, and the doubly bottom tetraquark.