Ambiversion of X(3872)

Abstract

An analysis including most recent Belle data on X(3872) is performed, using coupled channel Flatté formula. A third sheet pole close to but \textit{below} $D^0{D}^{\ast 0}$ threshold is found, besides the bound state/virtual state pole discussed in previous literature. The co-existence of two poles near the $D^0{D}^{\ast 0}$ threshold indicates that the X(3872) may be of ordinary $c\bar{c}$ $2^3{P}_1$ state origin, distorted by strong coupled channel effects. The latter manifests itself as a molecular bound state (or a virtual state).

Slightly revised version accepted for publication in Physics Letter B

References in corpus (9)

• Reconciling the X(3872) with the near-threshold enhancement in the D^0\bar{D}^{*0} final state
• Axial Resonances in the Open and Hidden Charm Sectors
• Line Shapes of the X(3872)
• Hadronic Decays of the X(3872) to chi_{cJ} in Effective Field Theory
• Decays of the X(3872) and ${\chi }_{c1}(2P)$ charmonium
• How Resonances can synchronise with Thresholds
• The Effects of Charged Charm Mesons on the Line Shapes of the X(3872)
• Hidden charm dynamically generated resonances and the $e^{+}{e}^{-}\to J/\psi D\bar{D}$, $J/\psi D{\bar{D}}^{\ast }$ reactions
• Pionic transitions from X(3872) to chi_{cJ}