TY  - JOUR
AU  - Kamiya, Y.
AU  - Miyahara, K.
AU  - Ohnishi, S.
AU  - Ikeda, Y.
AU  - Hyodo, T.
AU  - Oset, E.
AU  - Weise, W.
PY  - 2016
DA  - 2016//
TI  - Antikaon-nucleon interaction and Lambda(1405) in chiral SU(3) dynamics
T2  - Nucl. Phys. A
JO  - Nuclear Physics A
SP  - 41
EP  - 57
VL  - 954
PB  - Elsevier Science Bv
KW  - (K)over-barN interaction
KW  - Lambda(1405) resonance
KW  - Chiral SU(3) dynamics
KW  - pi Sigma spectrum
KW  - Compositeness
AB  - The properties of the Lambda(1405) resonance are key ingredients for determining the antikaon-nucleon interaction in strangeness nuclear physics, and the novel internal structure of the Lambda(1405) is of great interest in hadron physics, as a prototype case of a baryon that does not fit into the simple three-quark picture. We show that a quantitative description of the antikaon-nucleon interaction with the Lambda(1405) is achieved in the framework of chiral SU(3) dynamics, with the help of recent experimental progress. Further constraints on the (K) over barN subthreshold interaction are provided by analyzing pi Sigma spectra in various processes, such as the K(-)d -> pi Sigma n reaction and the Lambda(c) -> pi pi Sigma decay. The structure of the Lambda(1405) is found to be dominated by an antikaon-nucleon molecular configuration, based on its wavefunction derived from a realistic (K) over barN potential and the compositeness criteria from a model-independent weak-binding relation.
SN  - 0375-9474
UR  - http://arxiv.org/abs/1602.08852
UR  - https://doi.org/10.1016/j.nuclphysa.2016.04.013
DO  - 10.1016/j.nuclphysa.2016.04.013
LA  - English
N1  - WOS:000381331200005
ID  - Kamiya_etal2016
ER  -