η transitions between charmonia with meson loop contributions

Abstract

We study the $\eta$ transitions between $\psi (4040/4160)$ and $J/\psi$ by introducing charmed meson loops in an effective Lagrangian approach to enhance the decay amplitudes. The branching fractions $\mathcal{B}[\psi (4040)\to J/\psi \eta ]$ and $\mathcal{B}[\psi (4160)\to J/\psi \eta ]$ estimated in this paper can remarkably explain the experimental measurements of Belle and BESIII within a reasonable parameter range. The ${\eta }^{\prime }$ transition between $\psi (4160)$ and $J/\psi$ is also investigated, and the branching fraction is under the upper limit of CLEO, which can be tested by future experiments.

6 pages, 4 figures. More contents and discussions added. Typos corrected. Accepted by Phys. Rev. D

References in corpus (15)

• Phenomenology of Heavy Meson Chiral Lagrangians
• Final State Interactions in Hadronic B Decays
• Charmonium Decays of $Y(4260), psi(4160), and psi(4040)
• Charming penguins in B => K* pi, K (rho,omega,phi) decays
• J/psi absorption by pi and rho mesons in a meson exchange model with anomalous parity interactions
• First Measurement of $\Gamma (D\ast +)$
• Measurements of the cross sections for $e^{+}{e}^{-}\to \mathrm{hadrons}$ at 3.650, 3.6648, 3.773 GeV and the branching fraction for $\psi (3770)\to \mathrm{non}-D\bar{D}$
• Measurements of the braching fractions for psi(3770)--> D0D0-bar,D+D-,DD-bar$ and the resonance parameters of psi(3770) and psi(2S)
• On the spectral functions of scalar mesons
• The puzzle of excessive non-$D\bar{D}$ component of the inclusive $\psi (3770)$ decay and the long-distant contribution
• Towards a dynamical understanding of the non-$D\bar{D}$ decay of $\psi (3770)$
• J/psi couplings to charmed resonances and to pi
• Observation of $e^{+}{e}^{-}\to \eta J/\psi$ at center-of-mass energy $sqrts=4.009$ GeV
• QCD prediction for the non-$D\bar{D}$ annihilation decay of $\psi (3770)$
• Open charm effects in $e^{+}{e}^{-}\to J/\psi \eta$, $J/\psi {\pi }^0$ and $\varphi {\eta }_c$

Cited by in corpus (16)

• Selected strong decays of $\eta (2225)$ and $\varphi (2170)$ as $\Lambda \bar{\Lambda }$ bound states
• Observation of $e^{+}{e}^{-}\to {\chi }_{c0}\omega$ and missing higher charmonium $\psi (4S)$
• Strong and radiative decays of DΞmolecular state and newly observed ${\Omega }_c$ states
• Explaining the anomalous ${\rm Y}(5S)\to {\chi }_{bJ}\omega$ decays through the hadronic loop effect
• A new group of doubly charmed molecule with $T$-doublet charmed meson pair
• Spectroscopic survey of higher-lying states of $B_c$ meson family
• Confirming the existence of a new higher charmonium $\psi (4500)$ by the newly released data of $e^{+}{e}^{-}\to K^{+}{K}^{-}J/\psi$
• Anomalous radiative transitions between $h_b(nP)$ and ${\eta }_b(mS)$ and hadronic loop effect
• Role of $Y(4630)$ in the $p\bar{p}\to {\Lambda }_c{\bar{\Lambda }}_c$ reaction near threshold
• Proposal of searching for the ${\rm Y}(6S)$ hadronic decays into ${\rm Y}(nS)$ plus ${\eta }^{(\prime )}$
• Understanding the cross section of $e^{+}{e}^{-}\to \eta J/\psi$ process via nonrelativistic QCD
• Connection between near the $D_s^{+}{D}_s^{-}$ threshold enhancement in $B^{+}\to D_s^{+}{D}_s^{-}{K}^{+}$ and conventional charmonium ${\chi }_{c0}(2P)$
• Hidden-charm decays of $X(3915)$ and $Z(3930)$ as the P-wave charmonia
• The $X(2239)$ and $\eta (2225)$ as hidden-strange molecular states from $\Lambda \bar{\Lambda }$ interaction
• How higher charmonia shape the puzzling data of the $e^{+}{e}^{-}\to \eta J/\psi$ cross section
• $D$ wave bottomonia production from $Z_b^{(\prime )}$ decay