Leading-order decuplet contributions to the baryon magnetic moments in chiral perturbation theory

L. S. Geng; J. Martin Camalich; M. J.Vicente Vacas

doi:10.1016/j.physletb.2009.04.061

Leading-order decuplet contributions to the baryon magnetic moments in chiral perturbation theory

L. S. Geng
, J. Martin Camalich^*
, M. J.Vicente Vacas

^*Corresponding author for this work

University of Valencia

Research output: Contribution to journal › Article › peer-review

47 Scopus citations

Abstract

We extend an earlier study of the baryon magnetic moments in chiral perturbation theory by the explicit inclusion of the spin-3/2 decuplet resonances. We find that the corrections induced by these heavier degrees of freedom are relatively small in a covariant framework where unphysical spin-1/2 modes are removed. Consequently, implementing the leading SU(3)-breaking corrections given by both the baryon and decuplet contributions, we obtain a description of the baryon-octet magnetic moments that is better than the Coleman-Glashow relations. Finally, we discuss the uncertainties and compare between heavy baryon and covariant approaches.

Original language	English
Pages (from-to)	63-68
Number of pages	6
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	676
Issue number	1-3
DOIs	https://doi.org/10.1016/j.physletb.2009.04.061
State	Published - 1 Jun 2009
Externally published	Yes

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abstract = "We extend an earlier study of the baryon magnetic moments in chiral perturbation theory by the explicit inclusion of the spin-3/2 decuplet resonances. We find that the corrections induced by these heavier degrees of freedom are relatively small in a covariant framework where unphysical spin-1/2 modes are removed. Consequently, implementing the leading SU(3)-breaking corrections given by both the baryon and decuplet contributions, we obtain a description of the baryon-octet magnetic moments that is better than the Coleman-Glashow relations. Finally, we discuss the uncertainties and compare between heavy baryon and covariant approaches.",

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T1 - Leading-order decuplet contributions to the baryon magnetic moments in chiral perturbation theory

AU - Geng, L. S.

AU - Camalich, J. Martin

AU - Vacas, M. J.Vicente

PY - 2009/6/1

Y1 - 2009/6/1

N2 - We extend an earlier study of the baryon magnetic moments in chiral perturbation theory by the explicit inclusion of the spin-3/2 decuplet resonances. We find that the corrections induced by these heavier degrees of freedom are relatively small in a covariant framework where unphysical spin-1/2 modes are removed. Consequently, implementing the leading SU(3)-breaking corrections given by both the baryon and decuplet contributions, we obtain a description of the baryon-octet magnetic moments that is better than the Coleman-Glashow relations. Finally, we discuss the uncertainties and compare between heavy baryon and covariant approaches.

AB - We extend an earlier study of the baryon magnetic moments in chiral perturbation theory by the explicit inclusion of the spin-3/2 decuplet resonances. We find that the corrections induced by these heavier degrees of freedom are relatively small in a covariant framework where unphysical spin-1/2 modes are removed. Consequently, implementing the leading SU(3)-breaking corrections given by both the baryon and decuplet contributions, we obtain a description of the baryon-octet magnetic moments that is better than the Coleman-Glashow relations. Finally, we discuss the uncertainties and compare between heavy baryon and covariant approaches.

UR - https://www.scopus.com/pages/publications/65549118185

U2 - 10.1016/j.physletb.2009.04.061

DO - 10.1016/j.physletb.2009.04.061

M3 - 文章

AN - SCOPUS:65549118185

SN - 0370-2693

VL - 676

SP - 63

EP - 68

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-3

ER -

Leading-order decuplet contributions to the baryon magnetic moments in chiral perturbation theory

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