https://doi.org/10.1051/epjconf/20147304009
Meson baryon components in the states of the baryon decuplet
1 Departamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC, Institutos de Investigación de Paterna, Apartado 22085, 46071 Valencia, Spain
2 Department of Physics, Liaoning Normal University, Dalian 116029, China
3 School of Physics and Nuclear Energy Engineering and International Research Center for Nuclei and Particles in the Cosmos, Beihang University, Beijing 100191, China
a e-mail: aceti@ific.uv.es
b e-mail: dailr@lnnu.edu.cn
c e-mail: lisheng.geng@gmail.com
d e-mail: oset@ific.uv.es
Published online: 9 June 2014
We extend the Weinberg compositeness condition to partial waves of L = 1 and resonant states to determine the weight of meson-baryon component in the Jp = 3+/2 baryon decuplet. We obtain an appreciable weight of πN in the Δ(1232) wave function, of the order of 60 % and we also show that, as we go to higher energies in the members of the decuplet, the weights of meson-baryon component decrease and they already show a dominant part for a genuine component in the wave function. We interpret the meaning of the Weinberg sum-rule extended to complex energies.
© Owned by the authors, published by EDP Sciences, 2014
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