Baryon magnetic moments in large-N_c chiral perturbation theory

Details Baryon magnetic moments in large-N_c chiral perturbation theory Baryon magnetic moments in large-N_c chiral perturbation theory

2009-10-06

arxiv.org/abs/0910.1103v2

Phys.Rev.D80:094014,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

RevTex4, 36 pages, 2 eps figures; corrected typos; results agree with the ones of Ref. [26]

Scientific paper

10.1103/PhysRevD.80.094014

The baryon magnetic and transition magnetic moments are computed in heavy baryon chiral perturbation theory in the large-N_c limit, where N_c is the number of colors. One-loop nonanalytic corrections of orders m_q^{1/2} and m_q ln m_q are incorporated into the analysis, where contributions of both intermediate octet and decuplet baryon states are explicitly included. Expressions are obtained in the limit of vanishing baryon mass differences and compared with the current experimental data. Furthermore, a comparison with conventional heavy baryon chiral perturbation theory is carried out for three light quarks flavors and at the physical value N_c=3.

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