$S$ wave hidden charm - hidden strangeness production in $e^{+}{e}^{-}$ annihilation

Abstract

It is suggested that the recently observed enhancement of the relative yield in $e^{+}{e}^{-}$ annihilation of states with hidden charm and hidden strangeness above 4.43\,GeV is associated with the $S$ wave production of the charmed strange meson pairs $D_{s0}(2317){\bar{D}}_s^{\ast }+c.c.$ and $D_{s1}^{\ast }(2460){\bar{D}}_s+c.c.$. This mechanism implies a pattern of breaking of the Heavy Quark Spin Symmetry (HQSS) that can be tested in the final channels such as ${\eta }_c(1S)\varphi$, $h_c(1P)\eta$, $h_c(1P){\eta }^{\prime }$ produced in the same energy range.

6 pages, 3 figures

References in corpus (8)

• Multiquark States
• Study of $e^{+}{e}^{-}\to \omega {\chi }_{cJ}$ at center-of-mass energies from 4.21 to 4.42 GeV
• Measurement of the absolute branching fraction of $D_{s0}^{\ast \pm }(2317)\to {\pi }^0{D}_s^{\pm }$
• Observation of $e^{+}{e}^{-}\to K\bar{K}J/\psi$ at center-of-mass energies from 4.189 to 4.600 GeV
• The impact of $S$-wave thresholds $D_{s1}{\bar{D}}_s+c.c.$ and $D_{s0}{\bar{D}}_s^{\ast }+c.c.$ on vector charmonium spectrum
• Observation of $e^{+}{e}^{-}\to \varphi {\chi }_{c1}$ and $\varphi {\chi }_{c2}$ at $\sqrt{s}$=4.600 GeV
• Some properties of the states at the hidden-strangeness mixed ${\frac{1}{2}}^{+}+{\frac{1}{2}}^{-}$ heavy meson pair threshold in $e^{+}{e}^{-}$ annihilation
• Equality of $e^{+}{e}^{-}$ production amplitudes for scalar-vector and pseudoscalar-axial heavy meson-antimeson pairs

Cited by in corpus (2)

• The impact of $S$-wave thresholds $D_{s1}{\bar{D}}_s+c.c.$ and $D_{s0}{\bar{D}}_s^{\ast }+c.c.$ on vector charmonium spectrum
• Measurement of the Born Cross Sections for $e^{+}{e}^{-}\to D_s^{+}{D}_{s1}(2460{)}^{-}+c.c.$ and $e^{+}{e}^{-}\to D_s^{\ast +}{D}_{s1}(2460{)}^{-}+c.c.$