Soft-core baryon-baryon one-boson-exchange models. II. Hyperon-nucleon potential

Maessen, P. M. M.; Rijken, Th. A.; Swart, J. J. de

doi:10.1103/physrevc.40.2226

Cited by 440 publications

(623 citation statements)

References 43 publications

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“…Because of rotational invariance and parity conservation, the potential can be expanded into the following set of 8 spinor invariants, see for example [38,39]. Introducing…”

Section: B Partial Wave Projectionmentioning

confidence: 99%

Hyperon–nucleon interactions—a chiral effective field theory approach

2006

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“…Because of rotational invariance and parity conservation, the potential can be expanded into the following set of 8 spinor invariants, see for example [38,39]. Introducing…”

Section: B Partial Wave Projectionmentioning

confidence: 99%

Hyperon–nucleon interactions—a chiral effective field theory approach

2006

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“…Now, however, it is indeed so that our new YN model is repulsive in this partial wave whereas the old model is attractive. It is interesting that basically all available YN models predict rather small values for the spin-triplet scattering length of the N I = 3/2 channel [1,[4][5][6]11], though there is no general trend as far as the sign is concerned. We also observe 044005-12 an unnaturally large value for the triplet effective range, which is clearly related to the strong suppression of the corresponding scattering length.…”

Section: Low Energy Parameters and Phase Shiftsmentioning

confidence: 99%

“…For example, the Nijmegen group [3][4][5][6] views this interaction as being generated by genuine scalar meson exchange. In their model D [3] an (760) is exchanged as an SU(3) flavor singlet.…”

Section: Introductionmentioning

confidence: 99%

“…In their model D [3] an (760) is exchanged as an SU(3) flavor singlet. In models F [4], NSC [5], and NSC97 [6] a scalar SU(3) nonet is exchanged-namely, two isospin-0 mesons [besides the (760), the (1250) in model F and S * (975) (f 0 (980)) in model NSC (NSC97)], an isospin-1 meson [δ or a 0 (980)] and an isospin-1/2 strange meson κ with a mass of 1000 MeV. A genuine scalar SU (3) nonet is also present in the so-called Ehime potential [7], where in addition to the S * (975) and δ [or a 0 (980)] the f 0 (1581) and the K * 0 (1429) are included.…”

Section: Introductionmentioning

confidence: 99%

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Jülich hyperon-nucleon model revisited

Haidenbauer¹,

Meißner²

2005

Phys. Rev. C

244

326

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A one-boson-exchange model for the hyperon-nucleon ( N, N ) interaction is presented. The model incorporates the standard one boson exchanges of the lowest pseudoscalar and vector meson multiplets with coupling constants fixed by SU(6) flavor symmetry relations. As the main new feature of the model, the contributions in the scalar-isoscalar (σ ) and vector-isovector (ρ) exchange channels are now constrained by a microscopic model of correlated ππ and KK exchange. Additional short-ranged ingredients of the model in the scalar-isovector (a 0 ) and scalar-isospin-1/2 (κ) channels are likewise viewed as arising from meson-meson correlations but are treated phenomenologically. With this model a satisfactory reproduction of the available hyperon-nucleon data can be achieved.

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“…In our work the Nijmegen soft-core NY potentials NSC89 [11], NSC97f [12], or ESC08b [13] are used, which are fitted to the available experimental NY scattering data, together with the nucleonic forces + TBF introduced before. With the NN and NY potentials, the various G matrices are evaluated by solving numerically the Bethe-Goldstone equation, written in operatorial form as with the s.p.…”

Section: Hyperons In Nuclear Mattermentioning

confidence: 99%

Neutron Star Structure with Hyperons and Quarks

Schulze¹

2015

Proceedings of the International Symposium “Nanoscience and Quantum Physics 2012” (nanoPHYS’12)

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The high-density nuclear equation of state within the Brueckner-Hartree-Fock approach is discussed, with particular attention to the effects of nucleonic three-body forces, the presence of hyperons, and the joining with an eventual quark matter phase. The resulting properties of neutron stars, in particular the mass-radius relation, are determined. It turns out that in this approach stars heavier than about 1.4 solar masses contain necessarily quark matter.

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Soft-core baryon-baryon one-boson-exchange models. II. Hyperon-nucleon potential

Cited by 440 publications

References 43 publications

Hyperon–nucleon interactions—a chiral effective field theory approach

Hyperon–nucleon interactions—a chiral effective field theory approach

Jülich hyperon-nucleon model revisited

Neutron Star Structure with Hyperons and Quarks

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