%0 Journal Article
%T Unveiling the K-1(1270) double-pole structure in the (B)over-bar -> J/psi rho(K)over-bar and (B)over-bar -> J/psi(K)over-bar*pi decays
%A Dias, J. M.
%A Toledo, G.
%A Roca, L.
%A Oset, E.
%J Physical Review D
%D 2021
%V 103
%N 11
%I Amer Physical Soc
%@ 2470-0010
%G English
%F Dias_etal2021
%O WOS:000664520700018
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4886), last updated on Mon, 19 Jul 2021 06:53:58 +0000
%X By looking at the pseudoscalar-vector meson spectra in the (B) over bar -> J/psi rho(K) over bar and (B) over bar -> J/psi(K) over bar*pi weak decays, we theoretically investigate the double-pole structure of the K-1 (1270) resonance by using the chiral unitary approach to account for the final-state interactions between the pseudoscalar (P) and vector (V) mesons. The K-1 (1270) resonance is dynamically generated through these interactions in coupled channels and influences the shape of the invariant mass distributions under consideration. We show how these shapes are affected by the K-1 (1270) double-pole structure to confront the results from our model with future experiments that might investigate the PV spectra in these decays.
%R 10.1103/PhysRevD.103.116019
%U https://arxiv.org/abs/2102.08402
%U https://doi.org/10.1103/PhysRevD.103.116019
%P 116019-13pp