TY  - JOUR
AU  - Ortega, P. G.
AU  - Segovia, J.
AU  - Entem, D. R.
AU  - Fernandez, F.
PY  - 2016
DA  - 2016//
TI  - Canonical description of the new LHCb resonances
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 114018
EP  - 7pp
VL  - 94
IS  - 11
PB  - Amer Physical Soc
AB  - 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.
SN  - 2470-0010
UR  - http://arxiv.org/abs/1608.01325
UR  - https://doi.org/10.1103/PhysRevD.94.114018
DO  - 10.1103/PhysRevD.94.114018
LA  - English
N1  - WOS:000398727000006
ID  - Ortega_etal2016
ER  -