On the hidden charm state at 3872 MeV

Abstract

We discuss some puzzling aspects of the narrow hidden charm resonance that was recently discovered by the Belle Collaboration at mass 3872 MeV. In order to determine its quantum numbers, a crucial piece of information is the spin of the dipion in the decay final state pi^+pi^-J/psi. We give the angular distributions and correlations of the final particles in the decay which will give this information about the nature of this resonance.

10 pages, 1 eps figure, and 1 Table in Revtex. A comment with two references is added on mixing between a charmonium and a molecule

Cited by in corpus (79)

• Heavy quarkonium: progress, puzzles, and opportunities
• Hadronic molecules
• The hidden-charm pentaquark and tetraquark states
• Non-Standard Heavy Mesons and Baryons, an Experimental Review
• Observation of the Narrow State $X(3872)\to J/\psi {\pi }^{+}{\pi }^{-}$ in $\bar{p}p$ Collisions at $\sqrt{s}=1.96 \TeV$
• Isospin breaking of the narrow charmonium state of Belle at 3872 MeV as a deuson
• Study of the B- --> J/psi K- pi+ pi- Decay and Measurement of the B- --> X(3872) K- Branching Fraction
• Short Range Structure in the X(3872)
• Observation of a near-threshold omega-J/psi mass enhancement in exclusive B-->K omega J/psi decays
• Observation of a charged (DD*bar)- mass peak in e+e- --> pi+ (DD*bar)- at Ecm=4.26 GeV
• Charmonium Options for the X(3872)
• Charmonium levels near threshold and the narrow state $X(3872) \to π^{+}π^{-}\jpsi$
• Low-energy Universality and the New Charmonium Resonance at 3870 MeV
• Can the X(3872) be a 1^{++} four-quark state?
• The X(3872) boson: Molecule or charmonium
• Diagnostic Decays of the X(3872)
• X(3872): Hadronic Molecules in Effective Field Theory
• Coupled-channel model for charmonium levels and an option for X(3872)
• Bounds on the width, mass difference and other properties of X(3872) --> pi+pi-J/psi decays
• Estimate for the X(3872) to gamma J/psi decay width
• Line Shapes of the X(3872)
• X(3872) as a hadronic molecule and its decays to charmonium states and pions
• X(3872) as a molecular DD* state in a potential model
• Detailed Analysis of the Tetraquark Potential and Flip-Flop in SU(3) Lattice QCD
• J/psi gamma and psi(2S) gamma decay modes of the X(3872)
• Search for a Charged Partner of the X(3872) in the B Meson Decay B --> X- K, X- --> J/psi pi- pi0
• A New Hadron Spectroscopy
• Possible S-wave Bound-States of Two Pseudoscalar Mesons
• Heavy quark spin selection rule and the properties of the X(3872)
• Decays of the X(3872) into J/psi and Light Hadrons
• Exclusive Production of the X(3872) in B Meson Decay
• The Effects of Charged Charm Mesons on the Line Shapes of the X(3872)
• Production of the X(3872) in B Meson Decay by the Coalescence of Charm Mesons
• The Hidden Charm Decay of $X(3872),Y(3940)$ and Final State Interaction Effects
• Observation of the Decay B=> J/psi eta K and Search for X(3872)=> J/psi eta
• Factorization in the Production and Decay of the X(3872)
• $X(3872)\to J/\psi {\pi }^{+}{\pi }^{-}$ and $X(3872)\to J/\psi {\pi }^{+}{\pi }^{-}{\pi }^0$ decay widths from QCD sum rules
• Scattering of an Ultrasoft Pion and the X(3872)
• The study of $B_c^{-}\to X(3872){\pi }^{-}(K^{-})$ Decays in the Covariant Light-Front Approach
• On the scattering of D and D* mesons off the X(3872)
• Production of the X(3870) at the Upsilon(4S) by the Coalescence of Charm Mesons
• Weak productions of new charmonium in semi-leptonic decays of B_c
• X(3872) diagnostics with decays to D {\bar D} γ
• Weakly-bound Hadronic Molecule near a 3-body Threshold
• Finite volume corrections to the binding energy of the X(3872)
• AdS-QCD quark-antiquark potential, meson spectrum and tetraquarks
• Light quark mass dependence of the X(3872) in XEFT
• Operator Product Expansion in the Production and Decay of the X(3872)
• Estimate of the branching fraction ${\tau }^{-}\to \eta {\pi }^{-}{\nu }_{\tau }$, the $a_0^{-}(980)$, and non-standard weak interactions
• The Lost Tribes of Charmonium
• Search for a Charmonium Assignment for the X(3872)
• The X(3872) and the 3941 MeV peak in omega+J/Psi
• Inclusive Production of the X(3872)
• Charmonium spectrum and new observed states
• Threshold Effects and the Line Shape of the X(3872) in Effective Field Theory
• Predicting isovector charmonium-like states from X(3872) properties
• X(3872) in an unquenched quark model
• Experimental Review of Structures in the $J/\psi \varphi$ Mass Spectrum
• Search for X(3872) in gamma gamma Fusion and ISR at CLEO
• $e^{+}{e}^{-}\to \gamma X(3872)$ near the $D^{\ast }{\bar{D}}^{\ast }$ threshold
• On the Spin of the X(3872)
• Scalar and Vector 4Q Systems in Anisotropic Lattice QCD
• Lowest-lying Tetra-Quark Hadrons in Anisotropic Lattice QCD
• Angular momentum coefficients for meson strong decay and unquenched quark models
• The $\sigma$ and $\rho$ coupling constants for the charmed and beauty mesons
• Entanglement suppression and low-energy scattering of heavy mesons
• Dipion invariant mass spectrum in $X(3872)\to J/\psi \pi \pi$
• Heavy Hadron Spectroscopy
• Analysis of the vector meson transitions among the heavy quarkonium states
• Probing the structure of $X(3872)$ in photoproduction
• On the question of quark confinement in the Abelian U(1) QED gauge interaction
• Study of the $B^{-}\to K^{-}\eta {\eta }_c$ decay due to the $D\bar{D}$ bound state
• Search for X(3872) in gamma gamma Fusion and ISR at CLEO
• Theoretical Overview: The New Mesons
• New Particles from Belle
• Schottky Anomaly and Hadronic Spectrum
• Beyond CP violation: hadronic physics at BaBar
• Possible ${\Sigma }_c^{\ast }\bar{\Sigma }$ molecular states
• Exciting Baryons: now and in the future