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2024年10月30日
Chinese Physics C> 2012, Vol. 36> Issue(5) : 390-394 DOI: 10.1088/1674-1137/36/5/002

Strange magnetic moments of octet baryons under SU(3) breaking

  • Magnetic moments of octet baryons are parameterized to all orders of the flavor SU(3) breaking with the irreducible tensor technique in order to extract the contribution of each flavor quark to the magnetic moments of the octet baryons. The not-yet measured magnetic moment of ∑0 is predicted to be 0.649μN. Our parameterized forms for the magnetic moments are explicitly flavor-dependent, and hence each flavor component of the magnetic moments can be evaluated directly via the flavor projection operator. It is found that the strange magnetic moment of the nucleon is suppressed due to the small isoscalar anomalous magnetic moment of the nucleon. In particular, the strange magnetic form factor of the nucleon turns out to be positive, GNs(0)=0.428μN, which is consistent with recent data.
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CAO Lu, WANG Biao and CHEN Hong. Strange magnetic moments of octet baryons under SU(3) breaking[J]. Chinese Physics C, 2012, 36(5): 390-394. doi: 10.1088/1674-1137/36/5/002
CAO Lu, WANG Biao and CHEN Hong. Strange magnetic moments of octet baryons under SU(3) breaking[J]. Chinese Physics C, 2012, 36(5): 390-394.  doi: 10.1088/1674-1137/36/5/002 shu
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Received: 2011-07-21
Revised: 2011-08-31
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Strange magnetic moments of octet baryons under SU(3) breaking

  • Received Date: 2011-07-21
  • Accepted Date: 2011-08-31
  • Available Online: 2012-05-05

Abstract: Magnetic moments of octet baryons are parameterized to all orders of the flavor SU(3) breaking with the irreducible tensor technique in order to extract the contribution of each flavor quark to the magnetic moments of the octet baryons. The not-yet measured magnetic moment of ∑0 is predicted to be 0.649μN. Our parameterized forms for the magnetic moments are explicitly flavor-dependent, and hence each flavor component of the magnetic moments can be evaluated directly via the flavor projection operator. It is found that the strange magnetic moment of the nucleon is suppressed due to the small isoscalar anomalous magnetic moment of the nucleon. In particular, the strange magnetic form factor of the nucleon turns out to be positive, GNs(0)=0.428μN, which is consistent with recent data.

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