TY  - JOUR
AU  - Aceti, F.
AU  - Oset, E.
AU  - Roca, L.
PY  - 2014
DA  - 2014//
TI  - Composite nature of the Lambda (1520) resonance
T2  - Phys. Rev. C
JO  - Physical Review C
SP  - 025208
EP  - 8pp
VL  - 90
IS  - 2
PB  - Amer Physical Soc
AB  - Recently, the Weinberg compositeness condition of a bound state was generalized to account for resonant states and higher partial waves. We apply this extension to the case of the Lambda (1520) resonance and quantify the weight of the meson-baryon components in contrast to other possible genuine building blocks. This resonance was theoretically obtained from a coupled channels analysis using the s-wave pi Sigma* and K Xi* and the d-wave (K) over bar N and pi Sigma channels, applying the techniques of the chiral unitary approach. We obtain the result that this resonance is essentially dynamically generated from these meson-baryon channels, leaving room for only 15% weight of other kinds of components in its wave function.
SN  - 0556-2813
UR  - http://arxiv.org/abs/arXiv:1404.6128
UR  - https://doi.org/10.1103/PhysRevC.90.025208
DO  - 10.1103/PhysRevC.90.025208
LA  - English
N1  - WOS:000341271300006
ID  - Aceti_etal2014
ER  -