The chiral and angular momentum content of the rho-meson
Leonid Ya. Glozman, C. B. Lang, and Markus Limmer
TL;DR
This study uses lattice QCD to analyze the chiral and angular momentum structure of the rho-meson, revealing a dominant 3S1 component with minor D-wave admixture, consistent with SU(6) symmetry.
Contribution
It introduces a gauge-invariant method to determine the chiral and partial wave content of mesons in the infrared using lattice QCD.
Findings
The rho-meson is primarily a 3S1 state in the infrared.
A small 3D1 partial wave component is present.
Results agree with SU(6) flavor-spin symmetry expectations.
Abstract
It is possible to define and calculate in a gauge-invariant manner the chiral as well as the partial wave content of the quark-antiquark Fock component of a meson in the infrared, where mass is generated. Using the variational method and a set of interpolators that span a complete chiral basis we extract in a lattice QCD Monte Carlo simulation with two dynamical light quarks the orbital angular momentum and spin content of the rho-meson. We obtain in the infrared a simple 3S1 component as a leading component of the rho-meson with a small admixture of the 3D1 partial wave, in agreement with the SU(6) flavor-spin symmetry.
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