Properties of dibaryons in nuclear medium

Kakenov, M.; Kukulin, V. I.; Pomerantsev, V. N.; Bayakhmetov, O.

doi:10.1140/epja/s10050-020-00272-z

Cited by 5 publications

(4 citation statements)

References 52 publications

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“…The color singlet component is about 20%, the color singlet nucleon-like part is even smaller, 11%. Again, 47 this can provide a strong enrichment of the high-momentum component for 6 He considered in α + q 6 (I = 1, J = 0) cluster model.…”

Section: Combined Orbital-color Spin-isospin Projectionmentioning

confidence: 77%

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Symmetries in subatomic six-quark fermions

Vergados¹,

Strottman²

2022

Preprint

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The evidence of the existence of tetra-quark meson and penta-quark fermion systems has revived interest in the hunt of other multi-quark systems. We explore the possibility of six-quark cluster configurations with the two nucleon spin-isospin quantum numbers existing in the nuclear medium. The investigation of such clusters is feasible if one exploits all the symmetries involved, in particular orbital, color-spin SU (6)cs and isospin SU(2). We investigate whether such clusters contribute to neutrinoless double-beta decay mediated by heavy neutrinos or other exotic particles, since in conventional nuclear physics the relevant nuclear matrix elements are suppressed due to the presence of the nuclear hard core.

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Section: Combined Orbital-color Spin-isospin Projectionmentioning

confidence: 77%

“…This can of course be a component of the deuterium. Furthermore it is claimed 47 that this provide a strong enrichment of the high-momentum component for 6 Li considered in α+0s 6 (I=0,J=1) cluster model. Note that the color singlet component occurs with about 47% probability.…”

Section: Combined Orbital-color Spin-isospin Projectionmentioning

confidence: 98%

Symmetries in subatomic six-quark fermions

Vergados¹,

Strottman²

2022

Preprint

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“…Applying the dibaryon model for N N and 3N interactions in a threenucleon system resulted in a good description of the binding energies for the 3 H and 3 He nuclei and their Coulomb difference [59,60]. The DBM was also tested in the calculations of the ground states of the 6 Li and 6 He nuclei [61] within the framework of the three-cluster α + 2N model, with account of a new three-particle force induced by the interaction of the internal dibaryon state with the α core.…”

Section: The Results Of Calculations With the Dibaryon (Dressed Bag) ...mentioning

confidence: 99%

Dibaryon resonances and short-range $NN$ interaction

Kukulin¹,

Pomerantsev²,

Rubtsova³

et al. 2022

Preprint

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The dibaryon concept for the nuclear force is considered, assuming that the main attraction between the nucleons at medium distances is determined by the s-channel exchange of an intermediate six-quark (dibaryon) state. To construct the respective N N interaction model, a microscopic sixquark description of the N N system is used, in which symmetry aspects play a special role. The interaction within the dibaryon model includes a superposition of t-channel long-range one-pion exchange and s-channel dibaryon exchange. This interaction model is shown to give a good description of both elastic phase shifts and inelasticities of N N scattering in various partial waves in a broad energy range from zero to 600-800 MeV and even higher. It is shown also that the suggested coupling between the external N N channel and internal 6q channel leads to a dressing of the intermediate dibaryon state. Finally, the parameters of the dressed dibaryons corresponding to the best fit of N N scattering data turn out to be very close to the parameters of the observed dibaryon resonances in those N N partial configurations where their existence has been experimentally confirmed.

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“…Consequently, the dibaryon concept inevitably leads to the emergence of a new three-body force, which arises due to the interaction of a dressed dibaryon formed from a given pair of nucleons with another (third) nucleon. Applying the dibaryon model for and interactions in a three-nucleon system resulted in a good description of the binding energies for the 3 H and 3 He nuclei and their Coulomb difference [91][92][93]. The DBM was also tested in the calculations of the ground states of the 6 Li and 6 He nuclei [94] within the framework of the three-cluster model, taking into account a new three-particle force induced by the interaction of the internal dibaryon state with the α core.…”

Section: Nn Nnmentioning

confidence: 99%

Dibaryon resonances and short-range NN interaction*

Kukulin¹,

Pomerantsev²,

Rubtsova³

et al. 2022

Chinese Phys. C

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The dibaryon concept for the nuclear force is presented, assuming that the main attraction between the nucleons at medium distances is determined by the s-channel exchange of an intermediate six-quark (dibaryon) state. To construct the respective NN interaction model, a microscopic six-quark description of the NN system is used, in which symmetry aspects play a special role. It is shown that the NN interaction in all important partial waves can be described properly by a superposition of the long-range t-channel one-pion exchange and the s-channel exchange by an intermediate dibaryon. The developed model gives a good description of both elastic phase shifts and inelasticities of NN scattering in all S, P, D and F partial waves at energies from zero to 600–800 MeV and even higher. The parameters of the intermediate six-quark states corresponding to the best fit of NN scattering data are found to be consistent with the parameters of the known dibaryon resonances in those NN partial configurations where their existence has been experimentally confirmed. Predictions for new dibaryon states are given as well.

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Properties of dibaryons in nuclear medium

Cited by 5 publications

References 52 publications

Symmetries in subatomic six-quark fermions

Symmetries in subatomic six-quark fermions

Dibaryon resonances and short-range $NN$ interaction

Dibaryon resonances and short-range NN interaction*

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