Study of the radiative decay $J/\psi \to {\eta }_c+\gamma$ in light cone sum rules

Abstract

At present, there are many experimental and theoretical results for $J/\psi \to {\eta }_c+\gamma$ process, while the results are inconsistent based on different methods and considerations. In this paper, the light cone sum rules method is used in studying the radiative decay $J/\psi \to {\eta }_c+\gamma$. We give the transition form factor of this process based on the leading twist distribution amplitude of ${\eta }_c$ meson, with this form factor further obtain the decay width. Our result is consistent with those of other sum rules. A comparison of our result with others' about the decay width is also presented.

arXiv comment7 pages,3 figures

References in corpus (17)

• Higher Charmonia
• Properties of heavy quarkonia and B_c mesons in the relativistic quark model
• Radiative Transitions in Charmonium from Lattice QCD
• Precision tests of the J/ψ from full lattice QCD: mass, leptonic width and radiative decay rate to η_c
• Charmonium spectrum and their electromagnetic transitions with higher multipole contributions
• Exotic and excited-state radiative transitions in charmonium from lattice QCD
• Model-independent Study of Magnetic Dipole Transitions in Quarkonium
• J/psi and psi(2S) Radiative Transitions to eta_c
• Study of B Decays to Charmonium States $B\to {\eta }_{c}K$ and $B\to {\chi }_{C0}K$
• Improved determination of Heavy Quarkonium magnetic dipole transitions in pNRQCD
• Radiative transitions in charmonium from $N_f=2$ twisted mass lattice QCD
• Study of the pseudoscalar glueball in $J/\psi$ radiative decays
• Exclusive and Semi-Inclusive B Decays Based on \hspace{0.3cm} b $\to$ s \hspace{0.01cm}${\eta }_c$ \hspace{0.3cm} Transition
• Charmonium meson and hybrid radiative transitions
• Measurement of $J/\psi \to \gamma {\eta }_{\mathrm{c}}$ decay rate and ${\eta }_{\mathrm{c}}$ parameters at KEDR
• The cross section of the process $e^{+}+e^{-}\to J/\psi +{\eta }_c$ within the QCD light-cone sum rules
• The Excited Charmonium Production in $e^{+}{e}^{-}$ Annihilation

Cited by in corpus (4)

• Precise determination of decay rates for ${\eta }_c\to \gamma \gamma$, $J/\psi \to \gamma {\eta }_c$ and $J/\psi \to {\eta }_c{e}^{+}{e}^{-}$ from lattice QCD
• Study of the Magnetic Dipole Transition of $J/\psi \to \gamma {\eta }_c$ via ${\eta }_c\to p\bar{p}$
• Line shape of the $J\psi \to \gamma {\eta }_c$ decay
• Radiative Decays of Vector Mesons with Light-Cone Sum Rules