%0 Journal Article
%T The Z(cs)(3985) as a threshold effect from the (D)over-bar(s)*D + (D)over-bar(s)D* interaction
%A Ikeno, N.
%A Molina, R.
%A Oset, E.
%J Physics Letters B
%D 2021
%V 814
%I Elsevier
%@ 0370-2693
%G English
%F Ikeno_etal2021
%O WOS:000621722300029
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4746), last updated on Thu, 25 Mar 2021 13:08:00 +0000
%X We study the e(+)e(-) -> K+(D-s*D--(0) + Ds-D*(0)) reaction recently measured at BESIII, from where a new Z(cs) state has been reported. We study the interaction of (D) over bar D-s* with the coupled channels J/psi K-, K*(-)eta(c), Ds-D*(0), D-s*D--(0) by means of an extension to the charm sector of the local hidden gauge approach. We find that the Ds-D*(0) + D-s*D--(0) combination couples to J/psi K- and K*(-)eta(c), but the Ds-D*(0 ) -D-s*D--(0) combination does not. The coupled channels help to build up strength in the Ds-D*(0) + D-s*D--(0) diagonal scattering matrix close to threshold and, although the interaction is not strong enough to produce a bound state or resonance, it is sufficient to produce a large accumulation of strength at the (D) over bar D-s* threshold in the e(+)e(-) -> K+(D-s*D--(0) + Ds-D*(0)) reaction in agreement with experiment.
%R 10.1016/j.physletb.2021.136120
%U https://arxiv.org/abs/2011.13425
%U https://doi.org/10.1016/j.physletb.2021.136120
%P 136120-5pp