TY - JOUR
T1 - Antikaon–nucleon interaction and Λ(1405) in chiral SU(3) dynamics
AU - Kamiya, Yuki
AU - Miyahara, Kenta
AU - Ohnishi, Shota
AU - Ikeda, Yoichi
AU - Hyodo, Tetsuo
AU - Oset, Eulogio
AU - Weise, Wolfram
N1 - Funding Information:
This work was partly supported by the Grants-in-Aid for Scientific Research on Innovative Areas from MEXT (Grant No. 2404:24105008 ), by RIKEN Junior Research Associate Program, by RIKEN iTHES Project, by the Yukawa International Program for Quark–Hadron Sciences (YIPQS), by Open Partnership Joint Projects of JSPS Bilateral Joint Research Projects, by JSPS KAKENHI Grants Nos. 23224006 , 24740152 and 25800170 , by DFG through CRC 110 , by the Spanish Ministerio de Economía y Competitividad , European FEDER funds under Contract Nos. FIS2014-51948-C2-1-P and FIS2014-51948-C2-2-P , by the Generalitat Valenciana in the program Prometeo II, 2014/068 , and by the European Community-Research Infrastructure Integrating Activity Study of Strongly Interacting Matter (acronym HadronPhysics3, Grant Agreement No. 283286 ) under the Seventh Framework Programme of the EU.
Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2016/10/1
Y1 - 2016/10/1
N2 - The properties of the Λ(1405) resonance are key ingredients for determining the antikaon–nucleon interaction in strangeness nuclear physics, and the novel internal structure of the Λ(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 Λ(1405) is achieved in the framework of chiral SU(3) dynamics, with the help of recent experimental progress. Further constraints on the K¯N subthreshold interaction are provided by analyzing πΣ spectra in various processes, such as the K−d→πΣn reaction and the Λc→ππΣ decay. The structure of the Λ(1405) is found to be dominated by an antikaon–nucleon molecular configuration, based on its wavefunction derived from a realistic K¯N potential and the compositeness criteria from a model-independent weak-binding relation.
AB - The properties of the Λ(1405) resonance are key ingredients for determining the antikaon–nucleon interaction in strangeness nuclear physics, and the novel internal structure of the Λ(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 Λ(1405) is achieved in the framework of chiral SU(3) dynamics, with the help of recent experimental progress. Further constraints on the K¯N subthreshold interaction are provided by analyzing πΣ spectra in various processes, such as the K−d→πΣn reaction and the Λc→ππΣ decay. The structure of the Λ(1405) is found to be dominated by an antikaon–nucleon molecular configuration, based on its wavefunction derived from a realistic K¯N potential and the compositeness criteria from a model-independent weak-binding relation.
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U2 - 10.1016/j.nuclphysa.2016.04.013
DO - 10.1016/j.nuclphysa.2016.04.013
M3 - Article
AN - SCOPUS:84963959061
SN - 0375-9474
VL - 954
SP - 41
EP - 57
JO - Nuclear Physics A
JF - Nuclear Physics A
ER -