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Title

SU(3)-breaking corrections to the baryon-octet magnetic moments in chiral perturbation theory

AuthorsMartín Cámalich, Jorge ; Vicente Vacas, Manuel J. ; Álvarez Ruso, Luis ; Geng, Li Sheng
KeywordsHigh Energy Physics
Phenomenology (hep-ph)
Issue Date30-Apr-2009
AbstractWe report a calculation of the baryon magnetic moments using covariant chiral perturbation theory within the extended-on-mass-shell renormalization scheme including intermediate octet and decuplet contributions. By fitting the two available low-energy constants, we improve the Coleman-Glashow description of the data when we include the leading SU(3) breaking effects coming from the lowest-order loops. We compare with previous attempts at the same order using heavy-baryon and covariant infrared chiral perturbation theory, and discuss the source of the differences.
Description7 pag. Contribution to the proceedings of the International Workshop on Effective Field Theories: from the pion to the upsilon. Feb. 2009. Valencia, Spain
URIhttp://hdl.handle.net/10261/13706
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