Lambda NN and Sigma NN systems at threshold: II. The Effect of D waves
Aug, 2007Citations per year
Abstract: (arXiv)
Using the two-body interactions obtained from a chiral constituent quark model we study all and 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 spin-triplet scattering length a_{1/2,1}. Using the hypertriton binding energy we find a narrow interval for the possible values of the spin-singlet scattering length a_{1/2,0}. We found that the system has a quasibound state in the (I,J) = (1,1/2) channel very near threshold with a width of about 2.1 MeV.- 12.39.Jh
- 21.45.+v
- 13.75.Ev
- nucleon hyperon: interaction
- Lambda
- Sigma
- nucleon nucleon: interaction
- quark: constituent
- symmetry: chiral
- baryon: bound state
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