Searching for charmoniumlike states with hidden $s\bar{s}$

Abstract

We investigate the processes $e^{+}{e}^{-}$$\to$$\gamma J/\psi \varphi$, $\gamma J/\psi \omega$ and ${\pi }^{0}J/\psi \eta$ to search for the charmnium-like states with hidden $s\bar{s}$, such as $Y(4140)$, $Y(4274)$, $X(4350)$ and $X(3915)$. These processes will receive contributions from the charmed-strange meson rescatterings. When the center-of-mass energies of the $e^{+}{e}^{-}$ scatterings are taken around the $D_{s0}(2317)D_s^{\ast }$, $D_{s1}(2460)D_s$ or $D_{s1}(2460)D_s^{\ast }$ threshold, the anomalous triangle singularities can be present in the rescattering amplitudes, which implies a non-resonance explanation about the resonance-like structures. The positions of the anomalous triangle singularities are sensitive to the kinematics, which offers us a criterion to distinguish the kinematic singularities from genuine particles.

15 pages, 5 figures, 2 tables

References in corpus (11)

• Evidence for a Narrow Near-Threshold Structure in the $J/\psi \varphi$ Mass Spectrum in $B^{+}\to J/\psi \varphi K^{+}$ Decays
• Four-Quark Hadrons: an Updated Review
• Could the $X(3915)$ and the $X(3930)$ Be the Same Tensor State?
• Tetraquark state candidates: $Y(4140)$, $Y(4274)$ and $X(4350)$
• Strong decays of the $XYZ$ states
• The molecular systems composed of the charmed mesons in the $H\bar{S}+h.c.$ doublet
• $X(3915)$ as a $D_s{\bar{D}}_s$ bound state
• Resolving the puzzling decay patterns of charged $Z_c$ and $Z_b$ states
• Open charm effects in $e^{+}{e}^{-}\to J/\psi \eta$, $J/\psi {\pi }^0$ and $\varphi {\eta }_c$
• Search for the $Y(4140)$ via $e^{+}{e}^{-}\to \gamma \varphi J/\psi$ at $\sqrt{s}=$ 4.23, 4.26 and 4.36 GeV
• Possible contributions to $e^{+}{e}^{-}\to J/\psi +{\eta }_c$ due to intermediate meson rescatterings

Cited by in corpus (10)

• Hadronic molecules
• Pentaquark and Tetraquark states
• How to understand the underlying structures of $X(4140)$, $X(4274)$, $X(4500)$ and $X(4700)$
• Visible narrow cusp structure in ${\Lambda }_c^{+}\to p{K}^{-}{\pi }^{+}$ enhanced by triangle singularity
• Generating a resonance-like structure in the reaction $B_c\to B_s\pi \pi$
• Threshold effects as the origin of $Z_{cs}(4000)$, $Z_{cs}(4220)$ and $X(4700)$ observed in $B^{+}\to J/\psi \varphi K^{+}$
• Possibility of $T_{c\bar{s}}(2900)$ as the resonance-like structure induced by threshold effects
• 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
• The $X(4140)$ and $X(4160)$ resonances in the $e^{+}{e}^{-}\to \gamma J/\psi \varphi$ reaction
• Understanding close-lying exotic charmonia states within QCD sum rules