%0 Journal Article
%T Canonical description of the new LHCb resonances
%A Ortega, P. G.
%A Segovia, J.
%A Entem, D. R.
%A Fernandez, F.
%J Physical Review D
%D 2016
%V 94
%N 11
%I Amer Physical Soc
%@ 2470-0010
%G English
%F Ortega_etal2016
%O WOS:000398727000006
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3039), last updated on Thu, 27 Apr 2017 23:37:02 +0000
%X The LHCb Collaboration has recently observed four J/psi phi structures called X(4140), X(4274), X(4500), and X(4700) in the B+ -> J/psi phi K+ decays. We study them herein using a nonrelativistic constituent quark model in which the degrees of freedom are quark-antiquark and meson-meson components. The X(4140) resonance appears as a cusp in the J/psi phi channel due to the near coincidence of the D-s(+/-) D-s(*+/-) and J/psi phi mass thresholds. The remaining three [X(4274), X(4500), and X(4700)] appear as conventional charmonium states with quantum numbers 3(3)P(1), 4(3)P(0), and 5(3)P(0), respectively, and their masses and widths are slightly modified due to their coupling with the corresponding closest meson-meson thresholds. A particular feature of our quark model is a lattice-based screened linear confining interaction that has been constrained in the light-quark sector and usually produces higher excited heavy-quark states with lower masses than standard quark model predictions.
%R 10.1103/PhysRevD.94.114018
%U http://arxiv.org/abs/1608.01325
%U https://doi.org/10.1103/PhysRevD.94.114018
%P 114018-7pp