Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-11-24
Physics
High Energy Physics
High Energy Physics - Phenomenology
22 pages, 2 figures, 1 table
Scientific paper
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 lnm_q are analyzed and contributions of both intermediate octet and decuplet baryon states are included. The effects of the decuplet-octet mass difference are explicitly evaluated in corrections of order m_q^{1/2} only. The resultant expressions are compared with the available experimental data and with other determinations in the context of conventional heavy baryon chiral perturbation theory for three light quarks flavors and at the physical value N_c=3. The agreement reached is very good.
Ahuatzin Giovanna
Flores-Mendieta Ruben
Hernandez-Ruiz Maria A.
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