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oai:docta.ucm.es:20.500.14352/509632023-08-25T10:25:15Zcom_20.500.14352_14col_20.500.14352_15

Llanes Estrada, Felipe José Peláez Sagredo, José Ramón Vicente Vacas, M. J. Oset, E. 2023-06-20T10:40:33Z 2023-06-20T10:40:33Z 2005-06-13 0375-9474 10.1016/j.nuclphysa.2005.03.044 https://hdl.handle.net/20.500.14352/50963 http://dx.doi.org/10.1016/j.nuclphysa.2005.03.044 http://arxiv.org/abs/hep-ph/0501116 http://www.sciencedirect.com 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 (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. eng open access Two-meson cloud contribution to the baryon antidecuplet self-energy journal article