Effect of Tensor Interactions on the Nucleon and Anti-Nucleon Bound States

  • Due to the contributions of the quantum vacuum to densities, the relativistic Hartree approach for finite nuclei produces a large effective nucleon mass m IMN≈0.8, which causes the spin-orbit force to be only 1/3 of the empirical value. In this work we introduce tensor couplings for the vector mesons. Consequently, the spin-orbit force is enhanced by a factor of 2 while a large effective nucleon mass remains. The nucleon spectra of shell-model states are ameliorated evidently. The predicted anti-nucleon spectra in the vacuum are deepened about 20-30MeV.
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MAO Guang-Jun. Effect of Tensor Interactions on the Nucleon and Anti-Nucleon Bound States[J]. Chinese Physics C, 2003, 27(8): 692-697.
MAO Guang-Jun. Effect of Tensor Interactions on the Nucleon and Anti-Nucleon Bound States[J]. Chinese Physics C, 2003, 27(8): 692-697. shu
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Received: 2002-11-28
Revised: 1900-01-01
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Effect of Tensor Interactions on the Nucleon and Anti-Nucleon Bound States

    Corresponding author: MAO Guang-Jun,
  • Institute of High Energy Physics, CAS, Beijing 100039, ChinaInstitute of Theoretical Physics, CAS,Beijing 100080, ChinaWorld Laboratory, CCAST,Beijing 100080, China

Abstract: Due to the contributions of the quantum vacuum to densities, the relativistic Hartree approach for finite nuclei produces a large effective nucleon mass m IMN≈0.8, which causes the spin-orbit force to be only 1/3 of the empirical value. In this work we introduce tensor couplings for the vector mesons. Consequently, the spin-orbit force is enhanced by a factor of 2 while a large effective nucleon mass remains. The nucleon spectra of shell-model states are ameliorated evidently. The predicted anti-nucleon spectra in the vacuum are deepened about 20-30MeV.

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