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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
; | | Date: |
14 Dec 2004 | | Journal: | Nucl.Phys. A755 (2005) 395-398 DOI: 10.1016/j.nuclphysa.2005.03.044 | | Subject: | hep-ph nucl-th | | Affiliation: | RCNP, Osaka Univ., Complutense Madrid, IFIC, Valencia Univ. | | 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. | | Source: | arXiv, hep-ph/0501116 | | Services: | Forum | Review | PDF | Favorites | |
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