A New Scenario of Confinement and Hadron Spectra

الأصل · EN

This work presents a new phenomenological description of QCD vacuum where the color background field is depicted by a constant parallel vector with amplitude proportional to σ 0.28 GeV². The familiar Regge relation can be derived directly in a classic meaning. A new mass formula of hadrons are conjectured to give a very consistent description of hadron mass spectra. The lower bounds of the baryon mass are determined to be √3σ for nucleon and √5σ for isospin-3/2 baryon. In the meanwhile, the mass-square differences of 1 ³ S₁ and 1 ¹ S₀ meson states are obtained to be 2 σ. We also predict the mass of the lowest four-quark state to be √4σ, which favors the a₀(980) and f₀(980) to be four-quark candidates. On the other hand, the effective heavy quark confinement potential is a direct result of this model.