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arXiv · 0904.2292

Comment on "Mass and K Lambda coupling of N*(1535)"

S. Ceci·A. Svarc·B. Zauner
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Abstract

It is argued in [1] that when the strong coupling to the K Lambda channel is considered, Breit-Wigner mass of the lightest orbital excitation of the nucleon N(1535) shifts to a lower value. The new value turned out to be smaller than the mass of the lightest radial excitation N(1440), which effectively solved the long-standing problem of conventional constituent quark models. In this Comment we show that it is not the Breit-Wigner mass of N(1535) that is decreased, but its bare mass. [1] B. C. Liu and B. S. Zou, Phys. Rev. Lett. 96, 042002 (2006).

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S. Ceci, A. Svarc, B. Zauner. 2009-04-15. Comment on "Mass and K Lambda coupling of N*(1535)". https://doi.org/10.1103/physrevlett.96.042002

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