${{\mathit Z}_{{cs}}{(4000)}}$

$I(J^P)$ = $1/2(1^{+})$ 
Properties incompatible with a ${{\mathit q}}{{\overline{\mathit q}}}$ structure (exotic state). See the review on "Heavy Non-${{\mathit q}}{{\overline{\mathit q}}}$ Mesons." Seen by AAIJ 2021E in ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit Z}_{{cs}}{(4000)}^{+}}{{\mathit \phi}}$ with ${{\mathit Z}_{{cs}}{(4000)}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}^{+}}$ using an amplitude analysis of ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}{{\mathit K}^{+}}$ with a significance (accounting for systematic uncertainties) of 15 $\sigma $. The $\mathit J{}^{P} = 1{}^{+}$ assignment is favored with high significance. ABLIKIM 2021G also reports a $\mathit J{}^{P} = 1{}^{+}{{\mathit Z}_{{cs}}}$ state in this mass region using ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}$( ${{\mathit D}_{{s}}^{-}}{{\mathit D}^{*0}}{+}$ ${{\mathit D}_{{s}}^{*-}}{{\mathit D}^{0}}$) with a significance of 5.3 $\sigma $. The incompatible values for the widths reported by AAIJ 2021E and ABLIKIM 2021G could either indicate the existence of two separate states or possibly be explained in a coupled channel model (see ORTEGA 2021 ).
${{\mathit Z}_{{cs}}{(4000)}}$ MASS   $\text{3980 - 4010}$ MeV 
${{\mathit Z}_{{cs}}{(4000)}}$ WIDTH   $\text{5 - 150}$ MeV 
$\Gamma_{1}$ ${{\mathit J / \psi}}{{\mathit K}^{+}}$   seen 672
$\Gamma_{2}$ ${{\mathit D}_{{s}}^{+}}{{\overline{\mathit D}}^{*0}}$ or ${{\mathit D}_{{s}}^{*+}}{{\overline{\mathit D}}^{0}}$   seen