Study of $e^{+}{e}^{-}\to \omega X(3872)$ and $\gamma X(3872)$ from 4.66 to 4.95 GeV

Abstract

Using data samples with an integrated luminosity of $4.5{\text{fb}}^{-1}$ collected by the BESIII detector at center-of-mass energies ranging from 4.66 to 4.95 GeV, we study the processes of $e^{+}{e}^{-}\to \omega X(3872)$ and $e^{+}{e}^{-}\to \gamma X(3872)$. With the $e^{+}{e}^{-}\to \omega X(3872)$ process, the branching fraction ratio $R\equiv \frac{\mathcal{B}(X(3872)\to \gamma J/\psi )}{\mathcal{B}(X(3872)\to {\pi }^{+}{\pi }^{-}J/\psi )}$ is measured to be $0.38\pm 0.20_{\text{stat.}}\pm 0.01_{\text{syst.}}$ ($R<0.83$ at 90\% confidence level). In addition, we measure the ratio of the average cross section of $e^{+}{e}^{-}\to \omega X(3872)$ to $e^{+}{e}^{-}\to \omega {\chi }_{c1}(\omega {\chi }_{c2})$ to be ${\sigma }_{\omega X(3872)}/{\sigma }_{\omega {\chi }_{c1}}({\sigma }_{\omega X(3872)}/{\sigma }_{\omega {\chi }_{c2}})=5.2\pm 1.0_{\text{stat.}}\pm 1.9_{\text{syst.}}(5.5\pm 1.1_{\text{stat.}}\pm 2.4_{\text{syst.}})$. Finally, we search for the process of $e^{+}{e}^{-}\to \gamma X(3872)$, and no obvious signal is observed. The upper limit on the ratio of the average cross section of $e^{+}{e}^{-}\to \gamma X(3872)$ to $e^{+}{e}^{-}\to \omega X(3872)$ is set as ${\sigma }_{\gamma X(3872)}/{\sigma }_{\omega X(3872)}<0.23$ at 90\% confidence level.

19 pages, 10 figures

References in corpus (16)

• Higher Charmonia and X,Y,Z states with Screened Potential
• Charmonium spectrum and their electromagnetic transitions with higher multipole contributions
• QCD Sum Rules for the X(3872) as a mixed molecule-charmoniun state
• Study of $e^{+}{e}^{-}\to \gamma \omega J/\psi$ and Observation of $X(3872)\to \omega J/\psi$
• What can radiative decays of the X(3872) teach us about its nature?
• Measurements of $\psi (2S)$ and $X(3872)\to J/\psi {\pi }^{+}{\pi }^{-}$ production in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Luminosities and energies of $e^{+}{e}^{-}$ collision data taken between $\sqrt{s}$=4.612 GeV and 4.946 GeV at BESIII
• Radiative E1 decays of X(3872)
• Observation of the decay $X(3872)\to {\pi }^0{\chi }_{c1}(1P)$
• Radiative decay of the X(3872) as a mixed molecule-charmonium state in QCD Sum Rules
• Charm-meson Triangle Singularity in $e^{+}{e}^{-}$ Annihilation into $D^{\ast 0}{\bar{D}}^0+\gamma$
• Study of $B_s^0\to J/\psi {\pi }^{+}{\pi }^{-}{K}^{+}{K}^{-}$ decays
• Unquenched quark-model calculation of X(3872) electromagnetic decays
• Measurement of ${\chi }_{c1}(3872)$ production in proton-proton collisions at $\sqrt{s}=8$ and $13$ TeV
• The $c\bar{c}$ interaction above threshold and the radiative decay $X(3872)\to J/\psi \gamma$
• Observation of a New $X(3872)$ Production Process $e^{+}{e}^{-}\to \omega X(3872)$

Cited by in corpus (4)

• Evidence for Two Excited ${\Omega }^{-}$ Hyperons
• The ground states and first radial excitations of the vector tetraquark states with explicit P-waves via the QCD sum rules
• Two nearby states in the $X(3872)$ region: Resolving the radiative-decay ratio tension with ${\eta }_{c2}$
• Search for the $e^{+}{e}^{-}\to \varphi {\chi }_{c1}(3872)$ process at BESIII