Faddeev Calculation of $_Λ^3$H Incorporating 2π Exchange $Λ$NN Interaction

H. Kamada, M. Kohno, K. Miyagawa

Published 2023-04-13Version 1

Faddeev calculations of hypertriton ($_\Lambda^3$H) separation energy are performed, incorporating $2\pi$-exchange $\Lambda $NN three-baryon force. Repulsive contributions of the three-baryon force in the order of 50 $-$ 100 keV are found, depending on the NN interactions employed. The effect is not negligible compared with the small separation-energy of $_\Lambda^3$H and is essential to gauge the two-body $\Lambda$N interactions.