%0 Journal Article
%T Compositeness of the strange, charm, and beauty odd parity Lambda states
%A Garcia-Recio, C.
%A Hidalgo-Duque, C.
%A Nieves, J.
%A Salcedo, L. L.
%A Tolos, L.
%J Physical Review D
%D 2015
%V 92
%N 3
%I Amer Physical Soc
%@ 1550-7998
%G English
%F Garcia-Recio_etal2015
%O WOS:000359356100002
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2364), last updated on Thu, 10 Sep 2015 12:47:29 +0000
%X 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.
%R 10.1103/PhysRevD.92.034011
%U http://arxiv.org/abs/1506.04235
%U https://doi.org/10.1103/PhysRevD.92.034011
%P 034011-14pp