6533b851fe1ef96bd12a9660

RESEARCH PRODUCT

ΛNNandΣNNsystems at threshold. II. The effect ofDwaves

Humberto GarcilazoT. Fernandez-caramesA. Valcarce

subject

PhysicsNuclear physicsNuclear and High Energy PhysicsQuark modelConstituent quarkScattering lengthFew-body systemsNucleonLambda baryonLambdaHypertriton

description

Using the two-body interactions obtained from a chiral constituent quark model, we study allN N andN N states with I = 0, 1, 2a ndJ = 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 theN spin-triplet scattering length a1/2,1 .U sing the hypertriton binding energy, we find a narrow interval for the possible values of theN spin-singlet scattering length a1/2,0. We find that theN N system has a quasibound state in the (I,J ) = (1, 1/2) channel very near threshold with a width of about 2.1 MeV.

yearjournalcountryeditionlanguage
2007-09-04Physical Review C
https://doi.org/10.1103/physrevc.76.034001