New mechanism for intermediate- and short-range nucleon-nucleon interaction

Kukulin, V. I.; Obukhovsky, I. T.; Pomerantsev, V. N.; Faessler, Amand

doi:10.1088/0954-3899/27/9/301

Cited by 76 publications

(115 citation statements)

References 98 publications

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“…It has been shown [39] that when doing the nonrelativistic reduction of the above relativistic potentials we get the formulas very similar to those obtained in our previous fully microscopic semi-relativistic approach [29,30].…”

Section: The Case Of Thesupporting

confidence: 76%

“…Hence, this intermediate dibaryon has a large width (∼ 300−400 MeV) and thus cannot be visualized as a resonance-like bump in NN phase shifts or cross sections. Our previous papers [3,29,30] have demonstrated that this two-stage mechanism is quite able to explain with reasonable σqq and πqq coupling constants NN phase shifts in low partial waves up to 1 GeV. So that, quite similar to the nucleon dressing by a pion field, the dibaryon is dressed mainly by the scalar-isoscalar σ-field and the physical dibaryon should exist partially in the bare state and in the dressed state.…”

Section: Physical Model For the Intermediate-and Short-range Nn Forcementioning

confidence: 87%

“…The OPEpotential is taken here with soft cutoff constant Λ πN N = 700 MeV [29,30] which is dictated by all dynamical models of πN-interaction. The V TPE is approximated here, for the sake of simplicity, by a simple local gaussian function…”

Section: Illustrative Model For Nn Scattering In Low Partial Wavesmentioning

confidence: 99%

“…The new force model proposed recently by two groups jointly: the Moscow State University group and the Tübingen University group [3,29,30,35], treats the intermediate-and short-range NN-interaction as that proceeding through an intermediate dressed six-quark bag (i.e. via s-channel mechanism):…”

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confidence: 99%

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Description of intermediate- and short-range NN nuclear force within a covariant effective field theory

2005

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Section: The Case Of Thesupporting

confidence: 76%

Section: Physical Model For the Intermediate-and Short-range Nn Forcementioning

confidence: 87%

Section: Illustrative Model For Nn Scattering In Low Partial Wavesmentioning

confidence: 99%

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confidence: 99%

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Description of intermediate- and short-range NN nuclear force within a covariant effective field theory

2005

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“…According to authors of Dibaryon Model of NN-interaction [4] the strong discrepancies of experiment and theory observed in nd-and pd-breakup reactions can be explained by a significant strengthening of nn-and pp-correlations of attractive character in the third nucleon field in 3 H (pnn) and 3 He (ppn) systems. New mechanism arising in the Dibaryon model − scalar σ-meson exchange between the nucleon and dibaryon -is presented as a diagram in Fig.…”

Section: Introductionmentioning

confidence: 99%

Determination of Energy of n n-Singlet Virtual State in $$\varvec{d+{{}^{2}}}\hbox {H}\varvec{\rightarrow p+p+n+n}$$ d + 2

et al. 2017

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Determination of energy of nn-singlet virtual state in d+ 2 H  p+ p +n+n reactionAbstract The nn final state interaction has been investigated in d+ 2 H(pp) S +(nn) S p+p+n+n reaction going through a formation and breakup of singlet diproton and dineutron in the intermediate state.In the kinematically complete experiment performed at Ed =15 MeV two proton and neutron were detected at angles close to those of emission of (pp) S and (nn) S systems. Simulation of the reaction showed that the shape of neutron energy (timing) spectrum depends on εnn − the energy of virtual 1 S0 state of nn-system. The most likely value εnn = 0.076 ± 0.006MeV was obtained by fitting procedure using the experimental data and simulations. This low value of εnn evidently indicates on effective enhancement of nn-interaction in the intermediate state of studied reaction.

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