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Masses of the lowest spin-0 and spin-1 meson nonets: explicit symmetry breaking effects

Authors: Jorge Morais, Brigitte Hiller (Coimbra U.), Alexander A. Osipov

Ref.: Dubna, JINR - Feb 22 Phys.Rev. D95 (2017) no.7, 074033 (2017)

Abstract: We extend a known multiquark three-flavor Lagrangian of the Nambu-Jona-Lasinio type, which includes a set of effective interactions proportional to the current quark masses, to include the multiquark interactions of vector and axial-vector types. It is shown that the mass spectrum of the four low-lying meson nonets are in agreement with current phenomenological expectations. The role of the new interactions is analyzed in detail.

DOI: 10.1103/PhysRevD.95.074033