Nature of X(3872) from data

Abstract

Properties of the charmonium-like state X(3872) are investigated and its nature is discussed as based on the existing experimental data. In particular, we analyse the new data from Belle and BaBar Collaborations and argue that, while the BaBar data prefer the dynamically generated virtual state in the D\bar{D}* system, the new Belle data clearly indicate a sizable c\bar{c} 2^3P_1 component in the X wave function.

RevTeX4, 25 pages

References in corpus (36)

• Observation of a New Narrow Charmonium State in Exclusive B+-->K+ pi+pi- J/psi Decays
• Observation of a narrow charmonium-like state in exclusive B+ -> K+ pi+pi- J/psi decays
• Higher Charmonia
• Observation of the Narrow State $X(3872)\to J/\psi {\pi }^{+}{\pi }^{-}$ in $\bar{p}p$ Collisions at $\sqrt{s}=1.96 \TeV$
• Observation and Properties of the X(3872) Decaying to J/psi pi+ pi- in p-p(bar) 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)
• Evidence that the a0(980) and f0(980) are not elementary particles
• The D*0 D0bar threshold resonance
• Charmonium Options for the X(3872)
• Low-energy Universality and the New Charmonium Resonance at 3870 MeV
• Interference and binding effects in decays of possible molecular component of X(3872)
• The X(3872) boson: Molecule or charmonium
• Molecular States of Heavy Quark Mesons
• Analysis of the Quantum Numbers $J^{PC}$ of the X(3872) Particle
• Pion Interactions in the X(3872)
• Evidence for X(3872) --> psi(2S) gamma in B+/- --> X(3872) K+/- decays, and a study of B --> ccbar gamma K
• Is X(3872) a molecule?
• Coupled-channel model for charmonium levels and an option for X(3872)
• Observation of a Near-threshold $D^0{\bar{D}}^0{\pi }^0$ Enhancement in $B\to D^0{\bar{D}}^0{\pi }^{0}K$ Decay
• Reconciling the X(3872) with the near-threshold enhancement in the D^0\bar{D}^{*0} final state
• Study of Resonances in Exclusive B Decays to Dbar(*)D(*)K
• Isospin breaking effects in the X(3872) resonance
• Line Shapes of the X(3872)
• Measurement of the Dipion Mass Spectrum in X(3872) -> J/Psi Pi+ Pi- Decays
• Reinterpreting several narrow `resonances' as threshold cusps
• A study of B->X(3872) K, with X(3872)->J/Psi pi+ pi-
• How Resonances can synchronise with Thresholds
• Exclusive Production of the X(3872) in B Meson Decay
• Dynamics of Hadronic Molecule in One-Boson Exchange Approach and Possible Heavy Flavor Molecules
• Factorization in the Production and Decay of the X(3872)
• Pionic transitions from X(3872) to chi_{cJ}
• A Precision Determination of the D^0 Mass
• Weakly-bound Hadronic Molecule near a 3-body Threshold
• Measurements of CP-Violating Asymmetries and Branching Fractions in B Decays to omegaK and omegapi

Cited by in corpus (60)

• Heavy quarkonium: progress, puzzles, and opportunities
• Hadronic molecules
• The hidden-charm pentaquark and tetraquark states
• Phenomenology of $P_c(4380{)}^{+}$, $P_c(4450{)}^{+}$ and related states
• Effect of charmed meson loops on charmonium transitions
• Study of the lineshape of the ${\chi }_{c1}(3872)$ state
• Study of the $B\to X(3872)(\to D^{\ast 0}{\bar{D}}^0)K$ decay
• Dynamical origin and the pole structure of X(3872)
• Interplay of quark and meson degrees of freedom in a near-threshold resonance: multi-channel case
• Heavy hadronic molecules with pion exchange and quark core couplings: a guide for practitioners
• Three-body $D\bar{D}\pi$ dynamics for the X(3872)
• Different pole structures in line shapes of the $X(3872)$
• What can radiative decays of the X(3872) teach us about its nature?
• Lineshapes for composite particles with unstable constituents
• Interplay of quark and meson degrees of freedom in near-threshold states: A practical parametrisation for line shapes
• X(3872) in the molecular model
• Hidden-charm and bottom meson-baryon molecules coupled with five-quark states
• Channel coupling in heavy quarkonia: energy levels, mixing, widths and new states
• X(3872) and its production at hadron colliders
• Quark mass dependence of the X(3872) binding energy
• Study of the ${\psi }_2(3823)$ and ${\chi }_{c1}(3872)$ states in $B^{+}\to \left(J\psi {\pi }^{+}{\pi }^{-}\right)K^{+}$ decays
• From the lineshape of the $X(3872)$ to its structure
• Using Line Shapes to Discriminate between Binding Mechanisms for the X(3872)
• Producing fully-charm structures in the $J/\psi$-pair invariant mass spectrum
• $B\to {\chi }_{c1}(1P,2P)K$ decays in QCD factorization and X(3872)
• A Refined Analysis on the $X(3872)$ Resonance
• Some remarks on $X(6900)$
• $Z_c(3900)$ as a $D{\bar{D}}^{\ast }$ molecule from the pole counting rule
• Radiative decay of the X(3872) as a mixed molecule-charmonium state in QCD Sum Rules
• X(3872) as a 1D2 charmonium state
• Binding energy of the $X(3872)$ at unphysical pion masses
• Study of $B_s^0\to J/\psi {\pi }^{+}{\pi }^{-}{K}^{+}{K}^{-}$ decays
• Fully-heavy structures in the invariant mass spectrum of $J/\psi \psi (3686)$, $J/\psi \psi (3770)$, $\psi (3686)\psi (3686)$, and $J/\psi {\rm Y}(1S)$ at hadron colliders
• How to identify the structure of near-threshold states from the line shape
• Where are ${\chi }_{cJ}(3P)$?
• Study of the lineshape of $X(3872)$ using $B$ decays to $D^0\overline{D}{}^{\ast 0}K$
• Angular momentum coefficients for meson strong decay and unquenched quark models
• Charmonium states in a coupled-channel model
• Possible precise measurements of the $X(3872)$ mass with the $e^{+}{e}^{-}\to {\pi }^0\gamma X(3872)$ and $p\bar{p}\to \gamma X(3872)$ reactions
• Power counting for three-body decays of a near-threshold state
• Resonance-like structure near the $\eta d$ threshold in the $\gamma d${$\to$}${\pi }^0\eta d$ reaction
• Possible hadronic molecular states composed of $S$-wave heavy-light mesons
• One-pion exchange in the X(3872) revisited
• On the nature of X(3960)
• Topics in Hadron Spectroscopy in 2009
• Do near-threshold molecular states mix with neighbouring $\bar{Q}Q$ states?
• Compositeness of hadrons, nuclei, and atomic systems
• The $X(6900)$ peak could be a molecular state
• Coherent photoproduction of the neutral pion and eta meson on the deuteron at incident energies below 1.15 GeV
• Bottomonia in an unquenched quark model
• Short-range interactions and narrow resonances in effective field theory
• A helpful analogy between the covalent bond and Particle Spectroscopy
• Branching Fractions of the $X(3872)$
• Observation of the $B_s^0\to {\chi }_{c1}(3872){\pi }^{+}{\pi }^{-}$ decay
• ${\bar{D}}^0{D}^{0\ast }$ $(D^0{\bar{D}}^{0\ast })$ System in QCD-Improved Many Body Potential
• The general propagator for S-wave threshold states
• Exotic hadrons associated with $b$-quark
• Exotic open and hidden charm states
• Predicting charmed-strange molecular tetraquarks with $K^{(\ast )}$ and $T$-doublet charmed or anticharmed meson
• On the origin of the narrow peak and the isospin symmetry breaking of the $X$(3872)