Survey of J=0,1 mesons in a Bethe-Salpeter approach

TL;DR

This paper provides a comprehensive Bethe-Salpeter analysis of J=0,1 mesons across a wide range of quark masses, including exotic states, highlighting their sensitivity to the strong interaction's long-range behavior.

Contribution

It offers the first extensive survey of meson masses with J=0,1 using the Bethe-Salpeter equation, covering from the chiral limit to b-quark mass, including exotic quantum states.

Findings

Ground state meson masses across all J^{PC} channels

Sensitivity of meson states to the long-range strong interaction

Inclusion of exotic quantum number states

Abstract

The Bethe-Salpeter equation is used to comprehensively study mesons with J=0,1 and equal-mass constituents for quark masses from the chiral limit to the b-quark mass. The survey contains masses of the ground states in all corresponding J^{PC} channels including those with "exotic" quantum numbers. The emphasis is put on each particular state's sensitivity to the low- and intermediate-momentum, i.e., long-range part of the strong interaction.