On the nature of X(3960)

Abstract

A near-threshold enhancement in the $D_s^{+}{D}_s^{-}$ system, dubbed as $X(3960)$, is observed by the LHCb collaboration recently. A combined analysis on ${\chi }_{c0}(3930)(\to D^{+}{D}^{-})$, $X(3960)(\to D_s^{+}{D}_s^{-})$, and $X(3915)(\to J/\psi \omega )$ is performed using both a $K$-matrix approach of $D_{(s)}{\bar{D}}_{(s)}$ four-point contact interactions and a model of Flatté-like parameterizations. The use of the pole counting rule and spectral density function sum rule indicate, under current statistics, that this $D_s^{+}{D}_s^{-}$ near-threshold state has probably the mixed nature of a $c\bar{c}$ confining state and $D_s^{+}{D}_s^{-}$ continuum.

8 pages, 4 figures, 5 tables

References in corpus (16)

• Higher Charmonia and X,Y,Z states with Screened Potential
• Reconciling the X(3872) with the near-threshold enhancement in the D^0\bar{D}^{*0} final state
• Potential model calculations and predictions for heavy quarkonium
• Nature of X(3872) from data
• Ambiversion of X(3872)
• Could the $X(3915)$ and the $X(3930)$ Be the Same Tensor State?
• Establishing the heavy quark spin and light flavor molecular multiplets of the $X(3872)$, $Z_c(3900)$ and $X(3960)$
• Analysis of the $X(3960)$ and related tetraquark molecular states via the QCD sum rules
• Molecular Interpretation of $X(3960)$ as $D_s^{+}{D}_s^{-}$ State
• The $X(3960)$ seen in $D_s^{+}{D}_s^{-}$ as the $X(3930)$ state seen in $D^{+}{D}^{-}$
• X_1(2900) as a D_1 K molecule
• Understanding the $0^{++}$ and $2^{++}$ charmonium(-like) states near 3.9 GeV
• Dispersive analysis of the $\gamma \gamma \to D\bar{D}$ data and the confirmation of the $D\bar{D}$ bound state
• The scalar exotic resonances X(3915), X(3960), X(4140)
• Connection between near the $D_s^{+}{D}_s^{-}$ threshold enhancement in $B^{+}\to D_s^{+}{D}_s^{-}{K}^{+}$ and conventional charmonium ${\chi }_{c0}(2P)$
• Resonance $X(3960)$ as a hidden charm-strange scalar tetraquark

Cited by in corpus (5)

• Heavy- and light-flavor symmetry partners of the $T_{cc}^{+}(3875)$, the $X(3872)$ and the $X(3960)$ from light-meson exchange saturation
• $X(3960)$, $X_0(4140)$, and other compact $cs\bar{c}\bar{s}$ states
• Study of the $B^{-}\to K^{-}\eta {\eta }_c$ decay due to the $D\bar{D}$ bound state
• The ground states of hidden-charm tetraquarks and their radial excitations
• Three-body final state interactions in $B^{+}\to D\bar{D}{K}^{+}$ decays