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

6533b7d4fe1ef96bd126346f

RESEARCH PRODUCT

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

J. Martin Camalich L. Alvarez-ruso L. S. Geng M. J. Vicente Vacas

subject

High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph)High Energy Physics::Lattice Nuclear Theory High Energy Physics::Phenomenology FOS: Physical sciences

description

We 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.

year	journal	country	edition	language
2009-04-30

http://arxiv.org/abs/0904.4894

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