Baryon magnetic moments in large-N{sub c} chiral perturbation theory

Journal Article · Sun Nov 01 04:00:00 EST 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.80.094014· OSTI ID:21325473

Flores-Mendieta, Ruben ^[1]

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1. Instituto de Fisica, Universidad Autonoma de San Luis Potosi, Alvaro Obregon 64, Zona Centro, San Luis Potosi, S.L.P. 78000 (Mexico)

The baryon magnetic and transition magnetic moments are computed in heavy baryon chiral perturbation theory in the large-N{sub c} limit, where N{sub c} is the number of colors. One-loop nonanalytic corrections of orders m{sub q}{sup 1/2} and m{sub q}lnm{sub 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{sub c}=3.

• OSTI ID: 21325473
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 9 Vol. 80; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
CHIRALITY
COLOR MODEL
COMPARATIVE EVALUATIONS
CORRECTIONS
D QUARKS
FLAVOR MODEL
MAGNETIC MOMENTS
MASS DIFFERENCE
PERTURBATION THEORY
SIMULATION
U QUARKS