%0 Journal Article
%T Molecular components in P-wave charmed-strange mesons
%A Ortega, P. G.
%A Segovia, J.
%A Entem, D. R.
%A Fernandez, F.
%J Physical Review D
%D 2016
%V 94
%N 7
%I Amer Physical Soc
%@ 2470-0010
%G English
%F Ortega_etal2016
%O WOS:000395116100004
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2985), last updated on Thu, 23 Mar 2017 10:42:46 +0000
%X Results obtained by various experiments show that the D-s0(*)(2317) and D-s1(2460) mesons are very narrow states located below the DK and D*K thresholds, respectively. This is markedly in contrast with the expectations of naive quark models and heavy quark symmetry. Motivated by a recent lattice study which addresses the mass shifts of the c _ s ground states with quantum numbers J(P) = 1+ [D-s1 (2317)] and JP = 1(+) [D-s1(2460)] due to their coupling with S-wave D-(*) K thresholds, we perform a similar analysis within a nonrelativistic constituent quark model in which quark-antiquark and meson-meson degrees of freedom are incorporated. The quark model has been applied to a wide range of hadronic observables, and thus the model parameters are completely constrained. The coupling between quark- antiquark and mesonmeson Fock components is done using a P-3(0) model in which its only free parameter gamma has been elucidated, performing a global fit to the decay widths of mesons that belong to different quark sectors, from light to heavy. We observe that the coupling of the 0(+)(1(+)) meson sector to the DK (D*K) threshold is the key feature to simultaneously lower the masses of the corresponding D-s0(*)(2317) and D-s1(2460) states predicted by the naive quark model and describe the D-s1(2536) meson as the 1(+)state of the j(q)(p) =3/2(+) doublet predicted by heavy quark symmetry, reproducing its strong decay properties. Our calculation allows us to introduce the coupling with the D- wave D*K channel and the computation of the probabilities associated with the different Fock components of the physical state.
%R 10.1103/PhysRevD.94.074037
%U http://arxiv.org/abs/1603.07000
%U https://doi.org/10.1103/PhysRevD.94.074037
%P 074037-11pp