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Systematic study of hypernuclear magnetic moments under a perturb treatment

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Abstract

Hypernuclei ranged from light to heavy mass are systematically investigated using a relativistic mean-field (RMF) model with a novel proposed ωΛΛ tensor coupling interaction PK1-Y1. The tensor coupling effect on core polarization, and the orbital contribution to hyperon current are discussed. Contributions to the magnetic moment from pΛ and n −1 Λ systems are found to be opposite. An expression of the magnetic moment under perturb treatment is improved with an ωΛΛ tensor coupling and the core-polarized magnetic moment μ pol. D is found to be approximately proportional to the coupling strength g ωN · g 2ωλ . Self-consistent calculations under a perturb treatment show a semi-linear relationship as μ pol. D ∼ g ωλ when g ωN is fixed.

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Authors and Affiliations

  1. College of Science, China Agriculture University, 100083, Beijing, China

    X. S. Wang, H. Y. Sang & H. F. Lü

  2. School of Physical Science and Technology, Southwest University, Chongqing, 400715, China

    J. M. Yao

  3. Center for Mathematical Sciences, University of Aizu, Ikki-machi, Aizu-Wakamatsu, Fukushima, 965-8580, Japan

    H. Sagawa

Authors
  1. X. S. Wang
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  2. H. Y. Sang
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  3. H. F. Lü
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  4. J. M. Yao
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  5. H. Sagawa
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Correspondence to H. F. Lü.

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Communicated by A. Ramos

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Wang, X.S., Sang, H.Y., Lü, H.F. et al. Systematic study of hypernuclear magnetic moments under a perturb treatment. Eur. Phys. J. A 49, 101 (2013). https://doi.org/10.1140/epja/i2013-13101-1

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  • DOI: https://doi.org/10.1140/epja/i2013-13101-1

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