Reconciling the X(4630) with the Y(4660)

Abstract

The Belle Collaboration observed an enhancement called X(4630) in the Lambda_c^+ Lambda_c^- mass distribution using initial state radiation. We demonstrate that the enhancement could be consistent with the psi'f_0(980) molecular picture of the Y(4660) taking into account the Lambda_c^+ Lambda_c^- final state interaction. To test the hypothesis that the X(4630) and Y(4660) are the same molecular state, we give predictions for its spin partner, the eta_c'f_0(980) molecule. High statistic measurements of the B decays into the K Lambda_c^+ Lambda_c^- and K eta_c' pi^+ pi^- are strongly recommended.

9 pages

References in corpus (19)

• Observation of Two Resonant Structures in e+e- to pi+ pi- psi(2S) via Initial State Radiation at Belle
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• Canonical Charmonium Interpretation for Y(4360) and Y(4660)
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• ppbar enhancement in B and J/Psi decay
• The reaction ppbar -> Lambda_c-Lambda_cbar close to threshold
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Cited by in corpus (42)

• Heavy quarkonium: progress, puzzles, and opportunities
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• The $XYZ$ states: experimental and theoretical status and perspectives
• Exotic hadrons: review and perspectives
• An overview of $XYZ$ new particles
• Light Flavour and Heavy Quark Spin Symmetry in Heavy Meson Molecules
• Analysis of the $Z_c(4020)$, $Z_c(4025)$, $Y(4360)$ and $Y(4660)$ as vector tetraquark states with QCD sum rules
• Employing spin symmetry to disentangle different models for the XYZ states
• The electromagnetic form factors of the $\Lambda$ in the timelike region
• A tetraquark or not a tetraquark: A holography inspired stringy hadron (HISH) perspective
• Measurement of the Energy-Dependent Electromagnetic Form Factors of a Charmed Baryon
• Deciphering the recently discovered tetraquark candidates around 6.9 GeV
• Excited mesons, baryons, glueballs and tetraquarks: Predictions of the Holography Inspired Stringy Hadron model
• Observation of ${\Xi }_c(2930{)}^0$ and updated measurement of $B^{-}\to K^{-}{\Lambda }_c^{+}{\bar{\Lambda }}_c^{-}$ at Belle
• Strong decays of the $Y(4660)$ as a vector tetraquark state in solid quark-hadron duality
• Are the $Y$ states around 4.6 GeV from $e^{+}{e}^{-}$ annihilation higher charmonia?
• Re-examining the $X(4630)$ resonance in the reaction $e^{+}{e}^{-}\to {\Lambda }_c^{+}{\bar{\Lambda }}_c^{-}$
• Discussions on the Line-shape of $X(4660)$ Resonance
• Evidence of a structure in ${\bar{K}}^0{\Lambda }_c^{+}$ consistent with a charged ${\Xi }_c(2930{)}^{+}$, and updated measurement of ${\bar{B}}^0\to {\bar{K}}^0{\Lambda }_c^{+}{\bar{\Lambda }}_c^{-}$ at Belle
• Hidden charmed states and multibody color flux-tube dynamics
• Status of quarkonia - like negative and positive parity states in a relativistic confinement scheme
• Study on the rare decays of $Y(4630)$ induced by final state interactions
• Can the state $Y(4626)$ be a $P$-wave tetraquark state $[cs][\bar{c}\bar{s}]$?
• Y(4626) as a molecular state from interaction $D_s^{\ast }{\bar{D}}_{s1}(2536)-D_s{\bar{D}}_{s1}(2536)$
• Electromagnetic form factors of $\Lambda$ hyperon in the vector meson dominance model and a possible explanation of the near-threshold enhancement of the $e^{+}{e}^{-}\to \Lambda \bar{\Lambda }$ reaction
• Exploring open-charm decay mode ${\Lambda }_c{\bar{\Lambda }}_c$ of charmonium-like state $Y(4630)$
• Role of $Y(4630)$ in the $p\bar{p}\to {\Lambda }_c{\bar{\Lambda }}_c$ reaction near threshold
• Possible ${\Lambda }_c{\bar{\Lambda }}_c$ molecular states and their productions in nulceon-antinulceon collision
• The $X(2239)$ and $\eta (2225)$ as hidden-strange molecular states from $\Lambda \bar{\Lambda }$ interaction
• A novel explanation of charmonium-like structure in $e^{+}{e}^{-}\to \psi (2S){\pi }^{+}{\pi }^{-}$
• A new decay mode of higher charmonium
• Two- and three-body structure of the Y(4660)
• Study of structures and dynamical decay mechanisms for multiquark systems
• Evidence for the psi(5S) and psi(4D) c-cbar vector resonances
• The Beauty of Spin
• $Y(4626)$ as a $P$-wave $[cs][\bar{c}\bar{s}]$ tetraquark state
• Effective-range-expansion study of near threshold heavy-flavor resonances
• Searching for a hidden charm $h_1$ state in the $X(4660)\to \eta h_1$ and $X(4660)\to \eta D^{\ast }{\bar{D}}^{\ast }$ decays
• Charmonium decays into ${\Lambda }_c{\bar{\Lambda }}_c$ pair governed by the hadronic loop mechanism
• Light meson emissions of the selected charmonium-like states within compact tetraquark configurations
• Study of the $Y(4660)$ from a light-quark perspective