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Three-body hadronic structure of low-lying 1/2(+) Sigma and Lambda resonances

Author:
Torres, A. Martinez  Khemchandani, K. P.  Oset, E.  


Journal:
EUROPEAN PHYSICAL JOURNAL A


Issue Date:
2008


Abstract(summary):

We discuss the dynamical generation of some low-lying 1/2(+) Sigma and Lambda's in two-meson one-baryon systems. These systems have been constructed by adding a pion in the S-wave to the (K) over barN pair and its coupled channels, where the 1/2(-) Lambda(1405) -resonance gets dynamically generated. We solve Faddeev equations in the coupled-channel approach to calculate the T-matrix for these systems as a function of the total energy and the invariant mass of one of the meson-baryon pairs. This squared T-matrix shows peaks at the energies very close to the masses of the strangeness -1 , 1/2(+) resonances listed in the particle data book.


Page:
295---297


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