QED meson description of the anomalous particles at  17 and  38 MeV

Approximating light quarks as massless, we apply the Schwinger confinement mechanism to light quarks and infer that a light quark and a light antiquark interacting in the QED interaction are confined and bound as a QED meson in (1+1)D. Similarly, a light quark and a light antiquark interacting in the QCD interaction in the quasi-Abelian approximation are confined and bound as a QCD meson in (1+1)D. The QED and QCD mesons in (1+1)D can represent physical mesons in (3+1)D when the flux tube radius is taken into account. Such a theory leads to a reasonable description of the masses of π^0, η, and η', and its extrapolation to the unknown QED sector yields an isoscalar QED meson at about 17 MeV and an isovector QED meson at about 38 MeV. The observations of the anomalous soft photons, the hypothetical X17 particle, and the hypothetical E38 particle bear promising evidence for the possible existence of the QED mesons. Pending further confirmation, they hold important implications on the properties on the quarks and their interactions.