Chiral Dynamics of Low-Energy Kaon-Baryon Interactions with Explicit Resonance

Details Chiral Dynamics of Low-Energy Kaon-Baryon Interactions with Explicit Resonance Chiral Dynamics of Low-Energy Kaon-Baryon Interactions with Explicit Resonance

1998-05-05

arxiv.org/abs/nucl-th/9805011v1

Phys.Rev.C58:1634-1638,1998

Physics

Nuclear Physics

Nuclear Theory

16 pages, 6 figures

Scientific paper

10.1103/PhysRevC.58.1634

The processes involving low energy $\bar{K}N$ and $Y\pi$ interactions (where $Y= \Sigma$ or $\Lambda$) are studied in the framework of heavy baryon chiral perturbation theory with the $\Lambda$(1405) resonance appearing as an independent field. The leading and next-to-leading terms in the chiral expansion are taken into account. We show that an approach which explicitly includes the $\Lambda$(1405) resonance as an elementary quantum field gives reasonable descriptions of both the threshold branching ratios and the energy dependence of total cross sections.

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