Search for the ${\eta }_{c2}(1D)$ in $e^{+}{e}^{-}\to \gamma {\eta }_{c2}(1D)$ at $\sqrt{s}$ near 10.6 GeV at Belle

Abstract

For the first time we search for the ${\eta }_{c2}(1D)$ in $e^{+}{e}^{-}\to \gamma {\eta }_{c2}(1D)$ at $\sqrt{s}$ = 10.52, 10.58, and 10.867 GeV with data samples of 89.5 fb${}^{-1}$, 711 fb${}^{-1}$, and 121.4 fb${}^{-1}$, respectively, accumulated with the Belle detector at the KEKB asymmetric energy electron-positron collider. No significant ${\eta }_{c2}(1D)$ signal is observed in the mass range between 3.8 and 3.88 GeV/$c^2$. The upper limit at 90\% confidence level on the product of the Born cross section for $e^{+}{e}^{-}\to \gamma {\eta }_{c2}(1D)$ and branching fraction for ${\eta }_{c2}(1D)\to \gamma h_c(1P)$ is determined to be $\sigma (e^{+}{e}^{-}\to \gamma {\eta }_{c2}(1D))\mathcal{B}({\eta }_{c2}(1D)\to \gamma h_c(1P))$ $<$ 4.9 fb at $\sqrt{s}$ near 10.6 GeV.

9 pages, 4 figures, 2 tables

References in corpus (6)

• Higher Charmonia and X,Y,Z states with Screened Potential
• Excited and exotic charmonium, $D_s$ and $D$ meson spectra for two light quark masses from lattice QCD
• Observation of the $\psi (1^3{D}_2)$ state in $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}\gamma {\chi }_{c1}$ at BESIII
• Predictions of Light Hadronic Decays of Heavy Quarkonium 1D_2 States in NRQCD
• Evidence for $e^{+}{e}^{-}\to \gamma {\chi }_{c1,2}$ at center-of-mass energies from 4.009 to 4.360 GeV
• Study on ${\eta }_{c2}({\eta }_{b2})$ electromagnetic decay into double photons

Cited by in corpus (2)

• Two nearby states in the $X(3872)$ region: Resolving the radiative-decay ratio tension with ${\eta }_{c2}$
• Search for $e^{+}{e}^{-}\to \varphi {\chi }_{c0}$ and $\varphi {\eta }_{c2}(1D)$ at center-of-mass energies from 4.47 to 4.95 GeV