Two-meson cloud contribution to the baryon antidecuplet self-energy
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Two-meson cloud contribution to the baryon antidecuplet self-energy

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Two-meson cloud contribution to the baryon antidecuplet self-energy

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Hyodo, T.; Hosaka, Atsushi; Llanes Estrada, Felipe J.; Oset Báguena, Eulogio Perfil; Peláez Sagredo, José Ramón; Vicente Vacas, Manuel José Perfil
This document is a artículoDate2005

Este documento está disponible también en : http://hdl.handle.net/10550/39467
We study the self-energy of the SU(3) antidecuplet coming from two-meson virtual clouds. Assuming that the exotic Theta(+) belongs to an antidecuplet representation with N(1710) as nucleon partner, we derive effective Lagrangians that describe the decay of N(1710) into N pi pi with two pions in s- or p-wave. It is found that the self-energies for all members of the antidecuplet are attractive, and the larger strangeness particle is more bound. From two-meson cloud, we obtain about 20% of the empirical mass splitting between states with different strangeness.

    Hyodo, T. Hosaka, Atsushi Llanes Estrada, Felipe J. Oset Báguena, Eulogio Peláez Sagredo, José Ramón Vicente Vacas, Manuel José 2005 Two-meson cloud contribution to the baryon antidecuplet self-energy Nuclear Physics A 755 395 398
http://dx.doi.org/10.1016/j.nuclphysa.2005.03.044

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