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arXiv · 2010.10857

Properties of dibaryons in nuclear medium

M. Kakenov·V. I. Kukulin·V. N. Pomerantsev·O. Bayakhmetov
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Abstract

Properties of six-quark dibaryons in nuclear medium are considered by example of $A=6$ nuclei within the three-cluster $\alpha+2N$ model. Dibaryon production in nuclei leads to the appearance of a three-body force between the dibaryon and nuclear core. This non-conventional scalar force is shown to provide an additional attractive contribution to the three-body binding energy. This three-body contribution improves noticeably agreement between theoretical results and experimental data for the majority of observables. The most serious difference between the traditional $NN$-force models and the dibaryon-induced model is found for the nucleon momentum distribution, the latter model providing a strong enrichment of the high-momentum components both for $^6$Li and $^6$He cases.

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M. Kakenov, V. I. Kukulin, V. N. Pomerantsev, O. Bayakhmetov. 2020-10-21. Properties of dibaryons in nuclear medium. https://doi.org/10.1140/epja%2Fs10050-020-00272-z

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