Repulsive short-range three-nucleon interaction

Coon, S. A.; Peña, M. T.; Riska, D.O.

doi:10.1103/physrevc.52.2925

Cited by 37 publications

(64 citation statements)

References 49 publications

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“…The presence of NN * (1440) configurations in the deuteron was suggested long ago [101][102][103][104]. Graphs involving the excitation of N * (1440) appear also in other systems, as for example the neutral pion production in proton-proton reactions [105] or the threenucleon interaction mediated by π and σ exchange contributing to the triton binding energy [106]. The excitation of the Roper resonance has also been used to explain the missing energy spectra in the p(α, α ′ ) reaction [107] or the np → d(ππ) 0 reaction [108].…”

Section: The Nn * (1440) Systemmentioning

confidence: 99%

Quark-model study of few-baryon systems

et al. 2005

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Abstract. We review the application of non-relativistic constituent quark models to study one, two and three non-strange baryon systems. We present results for the baryon spectra, potentials and observables of the NN, N∆, ∆∆ and NN * (1440) systems, and also for the binding energies of three non-strange baryon systems. We make emphasis on observable effects related to quark antisymmetry and its interplay with quark dynamics.

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Section: The Nn * (1440) Systemmentioning

confidence: 99%

Quark-model study of few-baryon systems

et al. 2005

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“…The one-pion-exchange and the remaining phenomenological part of the potential can be written as a sum of eighteen operators, The first fourteen are charge-independent, O p=1,14 ij 12) and the last four, O p=15,18 ij binding energy. There could in principle be more charge-independence-breaking (CIB) terms such as L · ST ij or S ij (τ zi + τ zj ) but the scattering data are not sufficiently precise to identify them at present.…”

Section: )mentioning

confidence: 99%

“…are three-body correlations induced by the three-nucleon interaction, which we take in the form suggested by perturbation theory: 12) withr = yr, y a scaling parameter, and ǫ x a strength parameter. Here x = A, C, and R refers to the different parts of the NNN potential.…”

Section: T N I Ijkmentioning

confidence: 99%

Quantum Monte Carlo calculations of nuclei withA<~7

et al. 1997

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We report quantum Monte Carlo calculations of ground and low-lying excited states for nuclei with A ≤ 7 using a realistic Hamiltonian containing the Argonne v 18 two-nucleon and Urbana IX three-nucleon potentials. A detailed description of the Green's function Monte Carlo algorithm for systems with state-dependent potentials is given and a number of tests of its convergence and accuracy are performed. We find that the Hamiltonian being used results in ground states of both 6 Li and 7 Li that are stable against breakup into subclusters, but somewhat underbound compared to experiment. We also have results for 6 He, 7 He, and their isobaric analogs. The known excitation spectra of all these nuclei are reproduced reasonably well and we predict a number of excited states in 6 He and 7 He. We also present spin-polarized onebody and several different two-body density distributions. These are the first microscopic calculations that directly produce nuclear shell structure from realistic interactions that fit NN scattering data.

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“…Of course in a meson exchange picture additional processes should be added containing other meson exchanges like π − ρ, ρ − ρ; also different intermediate excited states might play a role. To some extent 3NF models with respect to those extensions have already been developed and applied [38][39][40][41]. Further studies should be performed.…”

Section: Scattering Formalism and 3nf Modelsmentioning

confidence: 99%

Ndelastic scattering as a tool to probe properties of3Nforces

et al. 2001

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Faddeev equations for elastic Nd scattering have been solved using modern NN forces combined with the Tucson-Melbourne two-pion exchange threenucleon force, with a modification thereof closer to chiral symmetry and the Urbana IX three-nucleon force. Theoretical predictions for the differential cross section and several spin observables using NN forces only and NN forces combined with three-nucleon force models are compared to each other and to the existing data. A wide range of energies from 3 to 200 MeV is covered. Especially at the higher energies striking three-nucleon force effects are found, some of which are supported by the still rare set of data, some are in conflict with data and thus very likely point to defects in those three-nucleon force models.

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Repulsive short-range three-nucleon interaction

Cited by 37 publications

References 49 publications

Quark-model study of few-baryon systems

Quark-model study of few-baryon systems

Quantum Monte Carlo calculations of nuclei withA<~7

Ndelastic scattering as a tool to probe properties of3Nforces

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