Chinese Physics C > 2020, Vol. 44 > Issue(2): 024102 DOI: 10.1088/1674-1137/44/2/024102

${ \Xi^- t} $ quasibound state instead of ΛΛnnbound state

1.
Escuela Superior de Física y Matemáticas, Instituto Politécnico Nacional, Edificio 9, 07738 México D.F., Mexico
2.
Departamento de Física Fundamental, Universidad de Salamanca, 37008 Salamanca, Spain
3.
Departamento de Física Atómica, Molecular y Nuclear, Universidad de Valencia (UV) and IFIC (UV-CSIC), 46100 Valencia, Spain
4.
IRIMED Joint Research Unit (IIS La Fe - UV), 46100 Valencia, Spain

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Abstract：
The coupled $ \Lambda\Lambda nn-\Xi^- pnn $ system was studied to investigate whether the inclusion of channel coupling is able to bind the $ \Lambda\Lambda nn $ system. We use a separable potential three-body model of the coupled $ \Lambda\Lambda nn - \Xi^- pnn $ system and a variational four-body calculation with realistic interactions. Our results exclude the possibility of a $ \Lambda\Lambda nn $ bound state by a large margin. Instead, we found a $ \Xi^- t $ quasibound state above the $ \Lambda\Lambda nn $ threshold.
- baryon-baryon interactions,
- few-body systems,
- Faddeev equations

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H. Garcilazo, A. Valcarce and J. Vijande. ${ \Xi^- t} $ quasibound state instead of ΛΛ nnbound state[J]. Chinese Physics C, 2020, 44(2): 024102. doi: 10.1088/1674-1137/44/2/024102

H. Garcilazo, A. Valcarce and J. Vijande. ${ \Xi^- t} $ quasibound state instead of ΛΛ nnbound state[J]. Chinese Physics C, 2020, 44(2): 024102. doi:10.1088/1674-1137/44/2/024102 shu

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Received: 2019-10-04

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沈阳化工大学材料科学与工程学院沈阳 110142

${ \Xi^- t} $ quasibound state instead of ΛΛnnbound state

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${ \Xi^- t} $ quasibound state instead of ΛΛnnbound state