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AbstractAbstract
[en] The quark delocalization and color screening model is used for a systematic study of the effective potential between baryons in the u, d and s sector. The model is constrained by the properties of baryons and N-N scattering. The effective potentials for the N-N (IJ = 01, 10, 11, 00) channels and the N-Λ and N-Σ (IJ = (1(2))1, (1(2))0, (3(2))0) channels fit the N-N, N-Λ and N-Σ scattering data reasonably well. This model predicts: there are rather strong effective attractions between some decuplet-baryons; the effective attractions between octet-baryons are usually weak; and the attractions between decuplet- and octet-baryons lie in between
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S0375947499003218; Country of input: International Atomic Energy Agency (IAEA); Copyright (c) 1999 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.
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Shinmura, S.; Wada, M.; Obu, M.; Akaishi, Y., E-mail: shinmura@gifu-u.ac.jp2013
AbstractAbstract
[en] A unified potential model of baryon–baryon and meson–baryon interactions at low energies is proposed. In this model, the short-range cores which simulate recent lattice QCD calculations are introduced. In baryon–baryon sector, our potentials give a very good agreement with NN and YN scattering data and have very similar behavior to those from the lattice QCD calculations. The π N and KN interactions are also well described in our model. (author)
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Gibson, B.F.
Funding organisation: U.S. Department of Energy (United States); Alexander von Humboldt-Stiftung, Bonn (Germany)1998
Funding organisation: U.S. Department of Energy (United States); Alexander von Humboldt-Stiftung, Bonn (Germany)1998
AbstractAbstract
[en] Implications of few-body hypernuclei for our understanding of the baryon- baryon interaction are examined. Octet-octet coupling effects not present in conventional, non strange nuclei are the focus. The need to identify strangeness -2 hypernuclei to test model predictions is emphasized. (author)
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MESON'98 Structure of Mesons, Baryons and Nuclei; Cracow (Poland); 26 May - 2 Jun 1998; 6 refs, 1 tab
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Acta Physica Polonica. Series B; ISSN 0587-4254;
; v. 29(11); p. 3203-3209

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[en] A recent general analysis of light-baryon isospin splittings is updated and extended to charmed baryons. The measured Σc and Ξc splittings stand out as being difficult to understand in terms of two-body forces alone. We also discuss heavy-light mesons; though the framework here is necessarily less general, we nevertheless obtain some predictions that are not strongly model dependent
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[en] The masses of strangeness zero baryons, with quarks in the S, P, and D shells of a harmonic oscillator potential, are calculated in the nonrelativistic constituent quark model. While the color hyperfine interaction is known to be successful in describing the mass splittings, inclusion of pion exchanges markedly improve the mass predictions of nucleon resonances, particularly those of negative parity. Fitting to all well established non-strange baryon masses below ≅ 2 GeV/c2 significantly improves previous results. (orig.)
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CENTRAL POTENTIAL, COLOR MODEL, DELTA-1232 BARYONS, DELTA-1620 BARYONS, DELTA-1700 BARYONS, DELTA-1905 BARYONS, DELTA-1910 BARYONS, DELTA-1920 BARYONS, DELTA-1950 BARYONS, DELTA-2000 BARYONS, HARMONIC POTENTIAL, HYPERFINE STRUCTURE, MASS DIFFERENCE, N*BARYONS, N-1440 BARYONS, N-1520 BARYONS, N-1535 BARYONS, N-1650 BARYONS, N-1675 BARYONS, N-1680 BARYONS, N-1700 BARYONS, N-1710 BARYONS, N-1720 BARYONS, N-2100 BARYONS, NUCLEONS, OPE MODEL, QUARK-QUARK INTERACTIONS, REST MASS
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Fujiwara, Yoshikazu; Miyagawa, Kazuya; Kohno, Michio; Suzuki, Yasuyuki; Nakamoto, Choki
Proceedings of workshop on developments of physics of nuclei far from stable nuclei2005
Proceedings of workshop on developments of physics of nuclei far from stable nuclei2005
AbstractAbstract
[en] From the view point of the quantum chromodynamics (QCD) mesons which describe the nuclear forces or baryon-baryon interactions are the qq bound states while the ground states of baryons are 3q states. The baryon-baryon interactions have been studied in detail on the basis of simple quark picture in a natural way by the present authors. For the recent discovery of the pentaquarks, the effects of gluons are considered to be incorporated in the form of interquark potential in the constituent quark model. Numbers of problems to be solved for the pentaquarks on the model are pointed out. Based on the principle that the fundamental interbaryon interactions are to be described in a consistent and unified way by the quark-gluon picture, the baryon-baryon interactions and the nuclear forces are reduced to the flavor dependence of the B8-B8 interactions since both the hyperons and nucleons are the members of the B8 baryon octets in the SU6. The recent development of this model using fss2 as the baryon interaction gives precise results even better than the phenomenological OBEP model. G-matrix calculations, nuclear matters, single particle potential are discussed on this model. Faddeev calculations of three-nucleon systems with NN interaction, Λ3H with NN and YN interactions, ΛΛ9Be with ααΛ model, and ΛΛ6He (Nagara event) with ΛΛα model are explained on the quark model. (S. Funahashi)
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Shinmura, Shoji (ed.) (Gifu Univ., Gifu (Japan)); Nagae, Tomofumi; Enyo, Yoshiko (eds.); High Energy Accelerator Research Organization, Tsukuba, Ibaraki (Japan); 115 p; Jan 2005; p. 1-13; Workshop on developments of physics of nuclei far from stable nuclei; Tsukuba, Ibaraki (Japan); 15-17 Mar 2004; Available from KEK(High Energy Accelerator Research Organization) 1-1 Oho, Tsukuba-shi, Ibaraki-ken, 305-0801 JAPAN; 36 refs.
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[en] Baryon-baryon coupling such as ΛN-ΣN in Λ hypernuclei and ΛΛ-ΞN in ΛΛ hypernuclei produce novel physics not observed in conventional nonstrange nuclei. This is especially evident in few-body systems. To illustrate this, a comparison of S = -1 and S = 0 baryon-separation energies is made. The role of ΛN-ΣN coupling suppression in the A = 4 Λ hypernuclei due to Pauli blocking is reviewed. The analysis is extended to S = -2 systems. Measurement of the ΛΛ4H or ΛΛ5He ΛΛ separation energy is proposed as a means to investigate the full ΛΛ and ΞN interaction
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1993 joint meeting of the American Physical Society and the American Association of Physics Teachers; Washington, DC (United States); 12-15 Apr 1993; CONF-9304297--
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[en] Based on the flux-tube-breaking mechanism, we have previously studied the strong decay of non-strange baryons into the elastic and several inelastic channels. Here, we extend these studies to Δπ decay. We compare our results with those of Koniuk and Isgur and with recently improved experimental data. We also present results of a new and improved calculation of N π decay and discuss the problem of resonance identification. (orig.)
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Numerical Data
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COLOR MODEL, D WAVES, DECAY AMPLITUDES, DELTA-1600 BARYONS, DELTA-1700 BARYONS, DELTA-1905 BARYONS, DELTA-1910 BARYONS, DELTA-1920 BARYONS, DELTA-1950 BARYONS, DELTA-2000 BARYONS, F WAVES, HADRONIC PARTICLE DECAY, N*BARYONS, N-1440 BARYONS, N-1520 BARYONS, N-1535 BARYONS, N-1650 BARYONS, N-1675 BARYONS, N-1680 BARYONS, N-1700 BARYONS, N-1710 BARYONS, N-1720 BARYONS, N-1990 BARYONS, N-2000 BARYONS, P WAVES, PARTICLE STRUCTURE, PARTICLE WIDTHS, QUANTUM CHROMODYNAMICS, RESONANCE, S WAVES, THEORETICAL DATA, WAVE FUNCTIONS
AMPLITUDES, BARYONS, COMPOSITE MODELS, DATA, DECAY, DELTA BARYONS, ELEMENTARY PARTICLES, FERMIONS, FIELD THEORIES, FUNCTIONS, HADRONS, INFORMATION, MATHEMATICAL MODELS, N BARYONS, NUMERICAL DATA, PARTIAL WAVES, PARTICLE DECAY, PARTICLE MODELS, PARTICLE PROPERTIES, QUANTUM FIELD THEORY, QUARK MODEL, TRANSITION AMPLITUDES
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[en] The symmetric harmonic oscillator quark model for baryons is used to estimate the decay widths of the transitions Σ* → Σπ, Σ* → Λπ and Λ* → Σπ with different possible assignments for Σ* and Λ* (excited baryons) in the multiplets [SU (6), lP]N (N = 1,2) of SU(6) x 0(3). Results are estimated with the standard harmonic oscillator parameter and the quark-pion coupling constant, namely α2 = 0.1 Gev2 and f2q/4π ≅ 0.055. Results obtained are compared with the available experimental measurements and the probable [SU(6), lP]N assignments of the excited strange baryons are assessed. Conclusive classification of the baryons on the basis of this model, can, however, be made on improvement of the experimental data for these widths. (author). 8 refs, 4 tabs
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Sep 1994; 8 p
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Numerical Data
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HADRONIC PARTICLE DECAY, HARMONIC OSCILLATOR MODELS, LAMBDA-1405 BARYONS, LAMBDA-1520 BARYONS, LAMBDA-1600 BARYONS, LAMBDA-1670 BARYONS, LAMBDA-1690 BARYONS, LAMBDA-1800 BARYONS, LAMBDA-1820 BARYONS, LAMBDA-1830 BARYONS, LAMBDA-1890 BARYONS, LAMBDA-2110 BARYONS, O GROUPS, PARTICLE WIDTHS, PIONS, QUARK MODEL, SIGMA-1385 BARYONS, SIGMA-1660 BARYONS, SIGMA-1670 BARYONS, SIGMA-1750 BARYONS, SIGMA-1775 BARYONS, SIGMA-1915 BARYONS, SIGMA-1940 BARYONS, SIGMA-2030 BARYONS, SU-6 GROUPS, THEORETICAL DATA
BARYONS, BOSONS, COMPOSITE MODELS, DATA, DECAY, DYNAMICAL GROUPS, ELEMENTARY PARTICLES, FERMIONS, HADRONS, HYPERONS, INFORMATION, LAMBDA BARYONS, LIE GROUPS, MATHEMATICAL MODELS, MESONS, NUMERICAL DATA, PARTICLE DECAY, PARTICLE MODELS, PARTICLE PROPERTIES, PSEUDOSCALAR MESONS, SIGMA BARYONS, STRANGE PARTICLES, SU GROUPS, SYMMETRY GROUPS
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[en] The effect of in-medium Δ-isobar in strange hadronic matter (SHM) is studied within the framework of the relativistic mean field (RMF). As far as the effect of the in-medium Δ-isobar is concerned, the authors find a second stable state comes into being in the higher density scope in SHM and this effect promotes the producing of Ξ hyperons through the reaction ΛΛ-ΞN. This effect is consistent with the conclusion that Ξ hyperons are constituents of SHM
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High Energy Physics and Nuclear Physics; ISSN 0254-3052;
; v. 23(12); p. 1203-1208

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