Published November 28, 2008 | Version v1
Journal article Metadata-only

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

Creators

  • 1. Departamento de Fisica Teorica and IFIC, Universidad de Valencia-CSIC, E-46071 Valencia (Spain)
  • 2. Departamento de Fisica, Universidad de Murcia, E-30071 Murcia (Spain)

Description

We calculate the baryon magnetic moments using covariant chiral perturbation theory (χPT) 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 χPT and covariant infrared χPT. We also analyze the source of this improvement with particular attention to the comparison between the covariant results

Additional details

Identifiers

DOI
10.1103/PhysRevLett.101.222002;
arXiv
arXiv:0805.1419v2;

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
101
Journal Issue
22
Journal Page Range
p. 222002-222002.4
ISSN
0031-9007
CODEN
PRLTAO

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
40054148
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
BARYONS; CHIRALITY; CORRECTIONS; MAGNETIC MOMENTS; MASS; PERTURBATION THEORY; RENORMALIZATION; SU-3 GROUPS; SYMMETRY BREAKING
Descriptors DEC
ELEMENTARY PARTICLES; FERMIONS; HADRONS; LIE GROUPS; PARTICLE PROPERTIES; SU GROUPS; SYMMETRY GROUPS

Optional Information

Notes
(c) 2008 The American Physical Society