Mass differences of light hadron isomultiplets
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1989-01-01
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Mass differences of low-lying, nonstrange, hadron isomultiplets are investigated in the framework of a relativistic, independent quark potential model, implemented by center-of-mass, one-gluon-exchange, and pion-cloud corrections. The introduction of pionic self-energy corrections with non-degenerate intermediate states is instrumental in our analysis, playing also a fundamental role for a successful description of the - mass splitting. The effect of the superposition of all these corrections is discussed in some detail for the p-n, +-0, +-0, and ++-0 mass differences. The corresponding hadronic masses are also calculated with suitable values for the hadronic sizes and quark masses. © 1989 The American Physical Society.
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Physical Review D, v. 40, n. 9, p. 3024-3034, 1989.