$X(3872)\to D\bar{D}\gamma$ decays and the structure of X(3872)

Abstract

It has been suggested that the radiative $X\to D\bar{D}\gamma$ decay modes are useful to shed light on the structure of the meson X(3872), since the ratio $R=\frac{\Gamma (X\to D^{+}{D}^{-}\gamma )}{\Gamma (X\to D^0{\bar{D}}^0\gamma )}$ is expected to be small ($R\ll 1$) if $X$ is a molecular $D^{\ast 0}{\bar{D}}^0$ state. We compute $R$ in a $\bar{c}c$ $J^{PC}=1^{++}$ description of $X$ finding that it is tiny in a wide range of hadronic parameters governing the decay. A discrimination between the molecular and $\bar{c}c$ description can be obtained through the analysis of the photon spectrum.

arXiv commentLaTex, 12 pages, 5 figures, version accepted for publication in PLB

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Cited by in corpus (28)

• The hidden-charm pentaquark and tetraquark states
• Charmonium
• Is X(3872) {\sl Really} a Molecular State?
• Quark structure of the $X(3872)$ and ${\chi }_b(3P)$ resonances
• Heavy hadronic molecules with pion exchange and quark core couplings: a guide for practitioners
• Exotic nuclei with open heavy flavor mesons
• Quark model description of the tetraquark state X(3872) in a relativistic constituent quark model with infrared confinement
• The Spin-orbit force, recoil corrections and possible $B{\bar{B}}^{\ast }$ and $D{\bar{D}}^{\ast }$ molecular states
• X(3872) as a hybrid state of the charmonium and the hadronic molecule
• Pionic transitions from X(3872) to chi_{cJ}
• Radiative transitions of heavy quarkonium states
• Observation of multiplicity-dependent prompt ${\chi }_{c1}(3872)$ and $\psi (2S)$ production in $pp$ collisions
• Heavy pentaquark spectroscopy in the diquark model
• Hadronic Loops versus Factorization in EFT calculations of $X(3872)\to {\chi }_{cJ}{\pi }^0$
• X(3872) and its Partners in the Heavy Quark Limit of QCD
• X(3872) and the bound state problem of $D^0{\bar{D}}^{\ast 0}$ (${\bar{D}}^0{D}^{\ast 0}$) in a chiral quark model
• X(3872) and Its Heavy Quark Spin Symmetry Partners in QCD Sum Rules
• Production of X(3872) at PANDA
• Charmonium possibility of X(3872)
• Analysis of the $X(3842)$ as a D-wave charmonium meson
• Analysis of the possible $D{\bar{D}}_{s0}^{\ast }(2317)$ and $D^{\ast }{\bar{D}}_{s1}^{\ast }(2460)$ molecules with QCD sum rules
• Semileptonic $B_c$ decays to $P-$wave charmonium and the nature of ${\chi }_{c1}(3872)$
• Analysis of the $D{\bar{D}}^{\ast }K$ system with QCD sum rules
• $S$-wave contributions to the $B_{(s)}\to {\chi }_{c1}(\pi \pi ,K\pi ,KK)$ decays
• Dynamical study of the possible molecular state X(3872) with the s-channel one gluon exchange interaction
• Nonleptonic $B_c$ decay rates from model independent relations
• ${\bar{D}}^0{D}^{0\ast }$ $(D^0{\bar{D}}^{0\ast })$ System in QCD-Improved Many Body Potential
• Exciting Baryons: now and in the future