{lambda}NN and {sigma}NN systems at threshold. II. The effect of D waves

Journal Article · Sat Sep 15 00:00:00 EDT 2007 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.76.034001· OSTI ID:21064327

Garcilazo, H; Valcarce, A; Fernandez-Carames, T ^[1]

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1. Escuela Superior de Fisica y Matematicas, Instituto Politecnico Nacional, Edificio 9, 07738 Mexico D.F. (Mexico)

Using the two-body interactions obtained from a chiral constituent quark model, we study all {lambda}NN and {sigma}NN 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 {lambda}N spin-triplet scattering length a{sub 1/2,1}. Using the hypertriton binding energy, we find a narrow interval for the possible values of the {lambda}N spin-singlet scattering length a{sub 1/2,0}. We find that the {sigma}NN system has a quasibound state in the (I,J)=(1,1/2) channel very near threshold with a width of about 2.1 MeV.

• OSTI ID: 21064327
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 76, Issue 3; Other Information: DOI: 10.1103/PhysRevC.76.034001; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BINDING ENERGY
CHIRALITY
D WAVES
LAMBDA BARYONS
MEV RANGE
NUCLEONS
PARTICLE WIDTHS
QUARK MODEL
QUASIBOUND STATE
S WAVES
SCATTERING LENGTHS
SPIN
THREE-BODY PROBLEM
TRIPLETS
TWO-BODY PROBLEM