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Are the Chiral Based \(\bar{\varvec{K}}\varvec{N}\) Potentials Really Energy-Dependent?

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Abstract

It is shown, that the energy dependence of the chiral based \(\bar{K}N\) potentials, responsible for the occurrence of two poles in the \(I=0\) sector, is the consequence of applying the on-shell factorization introduced in Oset and Ramos (Nucl Phys A 635:99, 1998). When the dynamical equation is solved without this approximation, the T-matrix has only one pole in the energy region of the \(\Lambda (1405)\) resonance.

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Authors and Affiliations

  1. MTA Wigner RCP, Inst. for Particle and Nuclear Physics, P.O.B. 49, Budapest, 1525, Hungary

    János Révai

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  1. János Révai
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Correspondence to János Révai.

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Révai, J. Are the Chiral Based \(\bar{\varvec{K}}\varvec{N}\) Potentials Really Energy-Dependent?. Few-Body Syst 59, 49 (2018). https://doi.org/10.1007/s00601-018-1371-1

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