English

Flavor structure of the octet magnetic moments

High Energy Physics - Phenomenology 2009-10-31 v2 Nuclear Theory

Abstract

We use the chiral quark-soliton model to identify all symmetry breaking terms linear in msm_{s} and investigate the strange magnetic moment in a ``model-independent'' way. Assuming hedgehog symmetry and employing the collective quantization, we obtain the most general expression for the flavor-singlet and flavor-octet magnetic moments in terms of seven independent parameters. Having fitted these parameters to the experimental magnetic moments of the octet baryons, we show that the strange magnetic moment turns out to be positive. The best fit obtained by minimizing χ2\chi^2 assuming 15% theoretical accuracy yields: μN(s)=(0.41±0.18)μN\mu^{({\rm s})}_{N} = (0.41 \pm 0.18) \mu_{N}.

Keywords

Cite

@article{arxiv.hep-ph/9801295,
  title  = {Flavor structure of the octet magnetic moments},
  author = {Hyun-Chul Kim and Michal Praszałowicz and Maxim V. Polyakov and Klaus Goeke},
  journal= {arXiv preprint arXiv:hep-ph/9801295},
  year   = {2009}
}

Comments

10 pages. RevTeX is used. One figure is included. The final version accepted for publication in Phys. Rev. D