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

T. Hyodo·A. Hosaka·F. J. Llanes-Estrada·E. Oset·J. R. Pelaez·M. J. Vicente Vacas
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Abstract

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.

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T. Hyodo, A. Hosaka, F. J. Llanes-Estrada, E. Oset, J. R. Pelaez, M. J. Vicente Vacas. 2005-01-14. Two-meson cloud contribution to the baryon antidecuplet self-energy. https://doi.org/10.1016/j.nuclphysa.2005.03.044

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