<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>Z</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi><mml:mi>s</mml:mi></mml:mrow></mml:msub><mml:mo stretchy="false">(</mml:mo><mml:mn>3985</mml:mn><mml:msup><mml:mrow><mml:mo stretchy="false">)</mml:mo></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>: A strange hidden-charm tetraquark resonance or not?
Rui Chen, Qi Huang
Abstract
Inspired by the newly ${Z}_{cs}(3985{)}^{\ensuremath{-}}$ reported by the BESIII Collaboration in the ${K}^{+}$ recoil-mass spectrum of the of ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}({D}^{*0}{D}_{s}^{\ensuremath{-}}/{D}^{0}{D}_{s}^{*\ensuremath{-}}){K}^{+}$ processes, we perform a dynamical study on the ${D}^{(*)0}{D}_{s}^{*\ensuremath{-}}$ interactions by adopting a one-boson-exchange model and considering the coupled channel effect. After producing the phase shifts for all the discussed channels, our results exclude the newly ${Z}_{cs}(3985{)}^{\ensuremath{-}}$ as a ${D}^{*0}{D}_{s}^{\ensuremath{-}}/{D}^{0}{D}_{s}^{*\ensuremath{-}}/{D}^{*0}{D}_{s}^{*\ensuremath{-}}$ resonance with $I({J}^{P})=1/2({1}^{+},{0}^{\ensuremath{-}},{1}^{\ensuremath{-}},{2}^{\ensuremath{-}})$.