Structures of the Λ(1405) in the Skyrme model

ORAL

Abstract

The Λ(1405) is well-known as a candidate of an exotic hadron resonance. Historically, the Λ(1405) was identified with a bound state of the anti-kaon (Kbar) and the nucleon (N). However, it is now considered to be a resonance state of the KbarN and πΣ channels. There are many experimental and theoretical studies for the Λ(1405). In this talk, we have investigated the structures of the Λ(1405) in the Skyrme model, where a baryon is described by a soliton with finite structures. To do that, we derive the coupling constant for the KbarN-πΣ vertex. 

*This work is supported by the JSPS KAKENHI [the Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS)] with Grant No. JP26400273(C).

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Presenters

  • Takashi Ezoe

    • RCNP, Osaka University

Authors

  • Takashi Ezoe

    • RCNP, Osaka University

  • Atsushi Hosaka

    • Osaka University
    • RCNP, Osaka university
    • RCNP, Osaka University