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arXiv · 1908.06813

Faddeev calculations on lambda hypertriton with potentials from Gel'fand-Levitan-Marchenko theory

Emile Meoto·Mantile Lekala
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Abstract

Effective lambda-proton and lambda-neutron potentials, restored from theoretical scattering phases through Gel'fand-Levitan-Marchenko theory, are tested on a lambda hypertriton through three-body calculations. The lambda hypertriton is treated as a three-body system consisting of lambda-proton, lambda-neutron and proton-neutron subsystems. Binding energy and root-mean-square radius are computed for the ground state of lambda hypertriton ($J^{\pi}=1/2^+$). In coordinate space, the dynamics of the system is described using a set of coupled hyperradial equations obtained from the Differential Faddeev Equations. By solving the eigenvalue problem derived from this set of coupled hyperradial equations, the binding energy and root-mean-square matter radius computed are found to be -2.462 MeV and 7.00 fm, respectively. The potentials are also shown to display a satisfactory convergence behaviour.

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Emile Meoto, Mantile Lekala. 2019-08-19. Faddeev calculations on lambda hypertriton with potentials from Gel'fand-Levitan-Marchenko theory. https://doi.org/10.1088/1572-9494%2Faba25a

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