Three-body dynamics of the $a_1(1260)$ resonance from lattice QCD
High Energy Physics - Lattice
2021-12-08 v1 High Energy Physics - Phenomenology
Nuclear Theory
Abstract
Resonant hadronic systems often exhibit a complicated decay pattern in which three-body dynamics play a relevant or even dominant role. In this work we focus on the resonance. For the first time, the pole position and branching ratios of a three-body resonance are calculated from lattice QCD using one-, two-, and three-meson interpolators and a three-body finite-volume formalism extended to spin and coupled channels. This marks a new milestone for ab-initio studies of ordinary resonances along with hybrid and exotic hadrons involving three-body dynamics.
Keywords
Cite
@article{arxiv.2107.03973,
title = {Three-body dynamics of the $a_1(1260)$ resonance from lattice QCD},
author = {Maxim Mai and Andrei Alexandru and Ruairí Brett and Chris Culver and Michael Döring and Frank X. Lee and Daniel Sadasivan},
journal= {arXiv preprint arXiv:2107.03973},
year = {2021}
}
Comments
14 pages, 7 figures