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arXiv · 2307.14592

Short-range correlations and momentum distributions in mirror nuclei 3H and 3He

Qi Meng·Ziyang Lu·Chang Xu
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Abstract

Motivated by recent high-energy electron and $\rm ^3H$ and $\rm ^3He$ nuclei scattering experiment in Jefferson Lab (Nature 609, 41 (2022)), the short-range correlations (SRCs) between nucleon pairs for 3-nucleon systems are microscopically studied using realistic $NN$ 2-body interaction and two-Gaussian type $NNN$ 3-body interaction. The wave functions of both $\rm ^3H$ and $\rm ^3He$ are obtained by solving 3-body Schr\"{o}dinger equations using Gaussian expansion method (GEM). The differences of one-nucleon and nucleon-nucleon momentum distributions between $\rm ^3H$ and $\rm ^3He$ are analyzed in detail. The results show that the percentages of $pn$-SRC pairs are significantly enhanced as compared with those of $nn(pp)$-SRC ones in $\rm ^3H$ and $\rm ^3He$ nuclei, which is consistent with the experimental findings.

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Qi Meng, Ziyang Lu, Chang Xu. 2023-07-27. Short-range correlations and momentum distributions in mirror nuclei 3H and 3He. https://doi.org/10.1103/physrevc.108.014001

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