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MESON BARYON COMPONENTS IN THE STATES OF THE BARYON DECUPLET

Author:
ACETI, F.   OSET, E.   DAI, L. R.   ZHANG, Y.   GENG, L. S.  


Journal:
International Journal of Modern Physics: Conference Series


Issue Date:
2014


Abstract(summary):

We apply an extension of the Weinberg compositeness condition on partial waves of L = 1 and resonant states to determine the weight of the meson-baryon component in the Delta(1232) resonance and the other members of the baryon decuplet. We obtain an appreciable weight of pi N in the Delta(1232) wave function, of the order of 60%, which looks more natural when one recalls that experiments on deep inelastic and Drell Yan give a fraction of pi N component of 34% for the nucleon. We also show that, as we go to higher energies in the members of the decuplet, the weights of the meson-baryon component decrease and they already show a dominant part for a genuine, non-meson-baryon, component in the wave function. We write a section to interpret the meaning of the Weinberg sum rule when it is extended to complex energies and another one for the case of an energy-dependent potential.


Page:
1460077


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