Topics on heavy baryon chiral perturbation theory in the large N_c limit

Details Topics on heavy baryon chiral perturbation theory in the large N_c limit Topics on heavy baryon chiral perturbation theory in the large N_c limit

2002-07-10

arxiv.org/abs/hep-ph/0207138v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages. Based on a talk given at 8th Mexican Workshop on Particles and Fields, Zacatecas, Mexico, 14-20 Nov 2001. To appear i

Scientific paper

10.1063/1.1489754

We compute nonanalytical pion-loop corrections to baryon masses in a combined expansion in chiral symmetry breaking and 1/N_c, where N_c is the number of colors. Specifically, we compute flavor-27 baryon mass splittings at leading order in chiral perturbation theory. Our results, at the physical value N_c=3, are compared with the expressions obtained in heavy baryon chiral perturbation theory with no 1/N_c expansion.

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