Leading SU(3)-Breaking Corrections to the Baryon Magnetic Moments in Chiral Perturbation Theory
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Leading SU(3)-Breaking Corrections to the Baryon Magnetic Moments in Chiral Perturbation Theory

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Leading SU(3)-Breaking Corrections to the Baryon Magnetic Moments in Chiral Perturbation Theory

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Geng, Li Sheng; Martín Camalich, Jorge; Álvarez Ruso, Luis; Vicente Vacas, Manuel José Perfil
Aquest document és un/a article, creat/da en: 2008
We calculate the baryon magnetic moments using covariant chiral perturbation theory (chi PT) within the extended-on-mass-shell renormalization scheme. 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. This success is in dramatic contrast with previous attempts at the same order using heavy-baryon chi PT and covariant infrared chi PT. We also analyze the source of this improvement with particular attention to the comparison between the covariant results.

    Geng, Li Sheng Martín Camalich, Jorge Álvarez Ruso, Luis Vicente Vacas, Manuel José 2008 Leading SU(3)-Breaking Corrections to the Baryon Magnetic Moments in Chiral Perturbation Theory Physical Review Letters 101 22 2220022
http://dx.doi.org/10.1103/PhysRevLett.101.222002
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