Naslov
Comment on "Mass and K Lambda Coupling of the N*(1535)"

Autori
Ceci, Saša ; Švarc, Alfred ; Zauner, Branimir

Izvornik
Physical Review Letters (0031-9007) 102 (2009), 20; 209101-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, komentar, znanstveni

Ključne riječi
baryon resonances; hadronic decays

Sažetak
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).

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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