Meson Structure in a Relativistic Many-Body Approach

Details Meson Structure in a Relativistic Many-Body Approach Meson Structure in a Relativistic Many-Body Approach

1999-06-14

arxiv.org/abs/hep-ph/9906359v1

Phys.Rev.Lett.84:1102-1105,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 RevTex pages plus two figures. Submitted to Phys.Rev.Lett

Scientific paper

10.1103/PhysRevLett.84.1102

Results from an extensive relativistic many-body analysis utilizing a realistic effective QCD Hamiltonian are presented for the meson spectrum. A comparative numerical study of the BCS, TDA and RPA treatments provides new, significant insight into the condensate structure of the vacuum, the chiral symmetry governance of the pion and the meson spin, orbital and flavor mass splitting contributions. In contrast to a previous glueball application, substantial quantitative differences are computed between TDA and RPA for the light quark sector with the pion emerging as a Goldstone boson only in the RPA.

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