TY  - JOUR
AU  - Garcia-Recio, C.
AU  - Hidalgo-Duque, C.
AU  - Nieves, J.
AU  - Salcedo, L. L.
AU  - Tolos, L.
PY  - 2015
DA  - 2015//
TI  - Compositeness of the strange, charm, and beauty odd parity Lambda states
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 034011
EP  - 14pp
VL  - 92
IS  - 3
PB  - Amer Physical Soc
AB  - We study the dependence on the quark mass of the compositeness of the lowest-lying odd parity hyperon states. Thus, we pay attention to Lambda-like states in the strange, charm, and beauty sectors which are dynamically generated using a unitarized meson-baryon model. In the strange sector we use a SU(6) extension of the Weinberg-Tomozawa meson-baryon interaction, and we further implement the heavy-quark spin symmetry to construct the meson-baryon interaction when charmed or beauty hadrons are involved. In the three examined flavor sectors, we obtain two J(P) = 1/2- and one J(P) = 3/2(-) Lambda states. We find that the. states which are bound states (the three Lambda(b)) or narrow resonances [one Lambda(1405) and one Lambda(c)(2595)] are well described as molecular states composed of s-wave meson-baryon pairs. The 1/2(-) wide Lambda(1405) and Lambda(c)(2595) as well as the 3/2(-) Lambda(1520) and Lambda(c)(2625) states display smaller compositeness so they would require new mechanisms, such as d-wave interactions.
SN  - 1550-7998
UR  - http://arxiv.org/abs/1506.04235
UR  - https://doi.org/10.1103/PhysRevD.92.034011
DO  - 10.1103/PhysRevD.92.034011
LA  - English
N1  - WOS:000359356100002
ID  - Garcia-Recio_etal2015
ER  -