Three-Body Dynamics of the a_{1}(1260) Resonance from Lattice QCD.

Mai, Maxim, Alexandru, Andrei, Brett, Ruairí ORCID: 0000-0001-8206-9420, Culver, Chris ORCID: 0000-0001-8542-1207, Döring, Michael, Lee, Frank X, Sadasivan, Daniel and GWQCD Collaboration, (2021) Three-Body Dynamics of the a_{1}(1260) Resonance from Lattice QCD. Physical review letters, 127 (22). 222001-.

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Official URL: http://dx.doi.org/10.1103/physrevlett.127.222001

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 a_{1}(1260) 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.

Item Type:	Article
Uncontrolled Keywords:	GWQCD Collaboration
Divisions:	Faculty of Science and Engineering > School of Physical Sciences
Depositing User:	Symplectic Admin
Date Deposited:	10 Dec 2021 15:52
Last Modified:	18 Jan 2023 21:23
DOI:	10.1103/physrevlett.127.222001
Open Access URL:	https://doi.org/10.1103/PhysRevLett.127.222001
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3145208