Threshold effects as the origin of $Z_{cs}(4000)$, $Z_{cs}(4220)$ and $X(4700)$ observed in $B^{+}\to J/\psi \varphi K^{+}$

Abstract

We investigate the $B^{+}\to J/\psi \varphi K^{+}$ decay via various rescattering diagrams. Without introducing genuine exotic resonances, it is shown that the $Z_{cs}(4000)$, $Z_{cs}(4220)$ and $X(4700)$ reported by the LHCb collaboration can be simulated by the $J/\psi K^{\ast +}$, ${\psi }^{\prime }{K}^{+}$ and ${\psi }^{\prime }\varphi$ threshold cusps, respectively. These cusps are enhanced by some nearby triangle singularities. The $X(4685)$ with $J^P=1^{+}$ cannot be well simulated by the threshold effects in our model, which implies that it may be a genuine resonance.

7 pages, 6 figures, 2 tables

References in corpus (31)

• Evidence for a Narrow Near-Threshold Structure in the $J/\psi \varphi$ Mass Spectrum in $B^{+}\to J/\psi \varphi K^{+}$ Decays
• Threshold cusps and triangle singularities in hadronic reactions
• Observation of a near-threshold structure in the $K^{+}$ recoil-mass spectra in $e^{+}{e}^{-}\to K^{+}(D_s^{-}{D}^{\ast 0}+D_s^{\ast -}{D}^0)$
• A Discussion on Triangle Singularities in the ${\Lambda }_b\to J/\psi K^{-}p$ Reaction
• Hadronic molecule structure of the Y(3940) and Y(4140)
• Explaining the Many Threshold Structures in the Heavy-Quark Hadron Spectrum
• $Z_b$ and $Z_c$ Exotic States as Coupled Channel Cusps
• Could the near-threshold $XYZ$ states be simply kinematic effects?
• On the nature of $a_1(1420)$
• Strange molecular partners of the $Z_c(3900)$ and $Z_c(4020)$
• Analysis of the Y(4140) with QCD sum rules
• The "$a_1(1420)$" peak as the $\pi f_0(980)$ decay mode of the $a_1(1260)$
• $Z_{cs}(3985{)}^{-}$ as the $U$-spin partner of $Z_c(3900{)}^{-}$ and implication of other states in the ${\text{SU(3)}}_F$ symmetry and heavy quark symmetry
• Triangle singularity as the origin of $X_0(2900)$ and $X_1(2900)$ observed in $B^{+}\to D^{+}{D}^{-}{K}^{+}$
• The $X(4140)$, $X(4274)$, $X(4500)$ and $X(4700)$ in the relativized quark model
• $X(4140)$, $X(4270)$, $X(4500)$ and $X(4700)$ and their $cs\bar{c}\bar{s}$ tetraquark partners
• About the exotic structure of $Z_{cs}$
• Possible Molecular States of $D_s^{\ast }{\bar{D}}_s^{\ast }$ System and Y(4140)
• The hidden charm decay of Y(4140) by the rescattering mechanism
• Interpretation of Axial Resonances in J/psi-phi at LHCb
• $P_c(4312{)}^{+}$, $P_c(4380{)}^{+}$, and $P_c(4457{)}^{+}$ as double triangle cusps
• Analysis of the $Z_{cs}(3985)$ as the axialvector tetraquark state
• $Z_{cs}(3985{)}^{-}$: a strange hidden-charm tetraquark resonance or not?
• Tetraquark state candidates: $Y(4140)$, $Y(4274)$ and $X(4350)$
• The $Z_{cs}(3985)$ as a threshold effect from the ${\bar{D}}_s^{\ast }D+{\bar{D}}_s{D}^{\ast }$ interaction
• Toward charged $Z_{cs}(3985)$ structure under a reflection mechanism
• How to understand the underlying structures of $X(4140)$, $X(4274)$, $X(4500)$ and $X(4700)$
• A unified description of the hidden-charm tetraquark states $Z_{cs}(3985)$, $Z_c(3900)$ and $X(4020)$
• Investigation of $cs\bar{c}\bar{s}$ tetraquark in the chiral quark model
• The nature of charged charmonium-like states $Z_c(3900)$ and its strange partner $Z_{cs}(3982)$
• Explanation of the newly obseaved $Z_{cs}^{-}(3985)$ as a $D_s^{(\ast )-}{D}^{(\ast )0}$ molecular state

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• An updated review of the new hadron states
• Hadronic molecules in B decays
• Hidden-charm tetraquarks with strangeness in the chiral quark model
• Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review
• Possibility of $T_{c\bar{s}}(2900)$ as the resonance-like structure induced by threshold effects
• $Z_{cs}$ states from the $D_s^{\ast }{\bar{D}}^{\ast }$ and $J/\psi K^{\ast }$ coupled channels: Signal in $B^{+}\to J/\psi \varphi K^{+}$ decay
• Resonance $X(4630)$
• $X$ and $Z_{cs}$ in $B^{+}\to J/\psi \varphi K^{+}$ as $s$-wave threshold cusps and alternative spin-parity assignments to $X(4274)$ and $X(4500)$
• $X(3960)$, $X_0(4140)$, and other compact $cs\bar{c}\bar{s}$ states
• The $Z_{cs}$ states and the mixture of hadronic molecule and diquark-anti-diquark components within effective field theory
• Hunting for the heavy quark spin symmetry partner of $Z_{cs}$