TY  - JOUR
AU  - Aceti, F.
AU  - Dai, L. R.
AU  - Geng, L. S.
AU  - Oset, E.
AU  - Zhang, Y.
PY  - 2014
DA  - 2014//
TI  - Meson-baryon components in the states of the baryon decuplet
T2  - Eur. Phys. J. A
JO  - European Physical Journal A
SP  - 57 - 11pp
VL  - 50
IS  - 3
PB  - Springer
AB  - 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.
SN  - 1434-6001
UR  - http://arxiv.org/abs/arXiv:1301.2554
UR  - https://doi.org/10.1140/epja/i2014-14057-2
DO  - 10.1140/epja/i2014-14057-2
LA  - English
N1  - WOS:000333108700001
ID  - Aceti_etal2014
ER  -