Structure of Lambda(1405) and threshold behavior of piSigma scattering

Details Structure of Lambda(1405) and threshold behavior of piSigma scattering Structure of Lambda(1405) and threshold behavior of piSigma scattering

2011-01-27

arxiv.org/abs/1101.5190v2

Prog.Theor.Phys.125:1205-1224,2011

Physics

Nuclear Physics

Nuclear Theory

20 pages, 4 figures, with corrections made after referring process

Scientific paper

10.1143/PTP.125.1205

The scattering length and effective range of the piSigma channel are studied in order to characterize the strangeness S=-1 meson-baryon scattering and the Lambda(1405) resonance. We examine various off-shell dependence of the amplitude in dynamical chiral models to evaluate the threshold quantities with the constraint at the KbarN threshold. We find that the piSigma threshold parameters are important to the structure of the Lambda(1405) resonance and provide further constraints on the subthreshold extrapolation of the KbarN interaction.

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