Study of electromagnetic decay of $J/\psi$ and ${\psi }^{\prime }$ to vector and pseudoscalar

Abstract

The electromagnetic decay contributions to $J/\psi ({\psi }^{\prime })\to VP$, where $V$ and $P$ stand for vector and pseudoscalar meson, respectively, are investigated in a vector meson dominance (VMD) model. We show that $J/\psi ({\psi }^{\prime })\to {\gamma }^{\ast }\to VP$ can be constrained well with the available experimental information. We find that this process has significant contributions in ${\psi }^{\prime }\to VP$ and may play a key role in understanding the deviations from the so-called "12% rule" for the branching ratio fractions between ${\psi }^{\prime }\to VP$ and $J/\psi \to VP$. We also address that the "12% rule" becomes very empirical in exclusive hadronic decay channels.

Revtex, 10 pages, 1 eps figure; further discussions about the helicity conservation rule and exp. constraints are included; version to appear in Phys. Lett. B

Cited by in corpus (15)

• Composition of the Pseudoscalar Eta and Eta' Mesons
• Decays of $J/\psi$ and ${\psi }^{\prime }$ into vector and pseudoscalar meson and the pseudoscalar glueball-$q\bar{q}$ mixing
• Explaining the anomalous ${\rm Y}(5S)\to {\chi }_{bJ}\omega$ decays through the hadronic loop effect
• Unified study of $J/\psi \to PV$, $P{\gamma }^{(\ast )}$ and light hadron radiative processes
• Isospin violation in $\varphi ,J/\psi ,{\psi }^{\prime }\to \omega {\pi }^0$ via hadronic loops
• Coupling Constant for ${\mathbf{N}}^{\ast }(1535)\mathbf{N}\rho$
• Charm Physics - A Field Full with Challenges and Opportunities
• Understanding the radiative decays of vector charmonia to light pseudoscalar mesons
• Electromagnetic form factors of ${\Sigma }^{+}$ and ${\Sigma }^{-}$ in the vector meson dominance model
• Comprehensive Calculations on the OZI-forbidden Nonleptonic Decays of Orthoquarkonia $J/\psi ({\rm Y})\to \pi \pi ,\rho \pi$
• QCD analysis of electromagnetic Dalitz decays $J/\psi \to {\eta }^{(\prime )}{\ell }^{+}{\ell }^{-}$
• Observation of the electromagnetic doubly OZI-suppressed decay $J/\psi \to \varphi {\pi }^0$
• Eta' gluonic content and J/psi->VP decays
• Pseudoscalar mixing in J/psi and psi(2S) decay
• Study of $C$ parity violating and strangeness changing $J/\psi$ $\to$ $PP$ weak decays