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arXiv · 0708.0199

$ΛNN$ and $ΣNN$ systems at threshold: II. The effect of D waves

H. Garcilazo·A. Valcarce·T. Fernandez-Carames
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Abstract

Using the two-body interactions obtained from a chiral constituent quark model we study all $ΛNN$ and $ΣNN$ states with I=0,1,2 and J=1/2,3/2 at threshold, taking into account all three-body configurations with S and D wave components. We constrain further the limits for the $ΛN$ spin-triplet scattering length a_{1/2,1}. Using the hypertriton binding energy we find a narrow interval for the possible values of the $ΛN$ spin-singlet scattering length a_{1/2,0}. We found that the $ΣNN$ system has a quasibound state in the (I,J) = (1,1/2) channel very near threshold with a width of about 2.1 MeV.

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H. Garcilazo, A. Valcarce, T. Fernandez-Carames. 2007-08-01. $ΛNN$ and $ΣNN$ systems at threshold: II. The effect of D waves. https://doi.org/10.1103/physrevc.76.034001

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