Baryon Masses in the 1/n C Expansion
نویسنده
چکیده
The masses of baryons and heavy quark baryons are studied analytically in an expansion in 1/Nc, SU (3) flavor symmetry breaking, and heavy-quark symmetry breaking. The measured baryon masses are in striking agreement with the 1/Nc hierarchy.
منابع مشابه
P - PH - 9 50 22 27 Baryon Mass Splittings in the 1 / N c Expansion
The I = 0; 1; 2; 3 mass splittings of the spin-1=2 octet and spin-3=2 decuplet baryons are analyzed in the 1=Nc expansion combined with perturbative avor breaking. We show there is considerable experimental evidence that the baryon masses satisfy the hierarchy predicted by this expansion. Since avor symmetry-breaking suppression factors alone are not su cient to describe the observed hierarchy,...
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