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



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Llanes Estrada, Felipe José and Peláez Sagredo, José Ramón and Vicente Vacas, M. J. and Oset, E. (2005) Two-meson cloud contribution to the baryon antidecuplet self-energy. Nuclear Physics A, 755 . 395C-398C. ISSN 0375-9474

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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.

Item Type:Article
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© 2005 Elsevier B.V. All rights reserved.
International Conference on Structure of Baryons (10.2004. Palaiseau, Francia)

Uncontrolled Keywords:Physics, Nuclear.
Subjects:Sciences > Physics
ID Code:24381
Deposited On:30 Jan 2014 17:11
Last Modified:31 Dec 2020 00:02

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