Constraints on the {omega}- and {sigma}-meson coupling constants with dibaryons

Journal Article · Mon Sep 01 00:00:00 EDT 1997 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.56.1576· OSTI ID:550408

Faessler, A; Buchmann, A J; Krivoruchenko, M I ^[1]; Krivoruchenko, M I ^[2]

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1. Institut fuer Theoretische Physik, Universitaet Tuebingen, Auf der Morgenstelle 14, D-72076 Tuebingen (Germany)
2. Institute for Theoretical and Experimental Physics, B.Cheremushkinskaya 25, 117259 Moscow (Russia)

The effect of narrow dibaryon resonances on basic nuclear matter properties and on the structure of neutron stars is investigated in mean-field theory and in relativistic Hartree approximation. The existence of massive neutron stars imposes constraints on the coupling constants of the {omega} and {sigma} mesons with dibaryons. In the allowed region of the parameter space of the coupling constants, a Bose condensate of the light dibaryon candidates d{sub 1}(1920) and d{sup {prime}}(2060) is stable against compression. This proves the stability of the ground state of heterophase nuclear matter with a Bose condensate of light dibaryons. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 550408
• Journal Information: Physical Review, C, Vol. 56, Issue 3; Other Information: PBD: Sep 1997
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
DIBARYONS
COUPLING CONSTANTS
OMEGA PARTICLES
SIGMA PARTICLES
MESON-BARYON INTERACTIONS
MESONS
RESONANCE
NUCLEAR MATTER
NEUTRON STARS
MEAN-FIELD THEORY
HARTREE-FOCK METHOD
BOSE-EINSTEIN CONDENSATION
LIMITING VALUES