Quark-Pauli effects in three octet-baryons

C. Nakamoto and Y. Suzuki
Phys. Rev. C 94, 035803 – Published 13 September 2016
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Abstract

To sustain a neutron star with about two times the solar mass, multibaryons including hyperons are expected to produce repulsive effects in the interior of its high-baryon-density region. To examine possible quark-Pauli repulsion among the baryons, we solve the eigenvalue problem of the quark antisymmetrizer for three octet-baryons that are described by most compact spatial configurations. We find that the Pauli blocking effect is weak in the Λnn system, while it is strong in the Σnn system. The appearance of the Σ hyperon is suppressed in the neutron star interior but no quark-Pauli repulsion effectively works for the Λ hyperon.

  • Received 23 June 2016

DOI:https://doi.org/10.1103/PhysRevC.94.035803

©2016 American Physical Society

Physics Subject Headings (PhySH)

Nuclear PhysicsParticles & FieldsGravitation, Cosmology & Astrophysics

Authors & Affiliations

C. Nakamoto1 and Y. Suzuki2,3

  • 1National Institute of Technology, Suzuka College, Suzuka 510-0294, Japan
  • 2Department of Physics, Niigata University, Niigata 950-2181, Japan
  • 3RIKEN Nishina Center, Wako 351-0198, Japan

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Issue

Vol. 94, Iss. 3 — September 2016

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