Measurement of $e^{+}{e}^{-}\to \gamma {\chi }_{cJ}$ via initial state radiation at Belle

Abstract

The process $e^{+}{e}^{-}\to \gamma {\chi }_{cJ}$ ($J$=1, 2) is studied via initial state radiation using 980 fb${}^{-1}$ of data at and around the ${\rm Y}(nS)$ ($n$=1, 2, 3, 4, 5) resonances collected with the Belle detector at the KEKB asymmetric-energy $e^{+}{e}^{-}$ collider. No significant signal is observed except from $\psi (2S)$ decays. Upper limits on the cross sections between $\sqrt{s}=3.80$ and $5.56\mathrm{GeV}$ are determined at the 90% credibility level, which range from few pb to a few tens of pb. We also set upper limits on the decay rate of the vector charmonium [$\psi (4040$), $\psi (4160)$, and $\psi (4415)$] and charmoniumlike [$Y(4260)$, $Y(4360)$, and $Y(4660)$] states to $\gamma {\chi }_{cJ}$.

Accepted by PRD

References in corpus (5)

• Heavy quarkonium: progress, puzzles, and opportunities
• Observation of Two Resonant Structures in e+e- to pi+ pi- psi(2S) via Initial State Radiation at Belle
• Measurement of e^+e^- to pi^+pi^-J/psi Cross Section via Initial State Radiation at Belle
• Canonical Charmonium Interpretation for Y(4360) and Y(4660)
• Evidence for $e^{+}{e}^{-}\to \gamma {\chi }_{c1,2}$ at center-of-mass energies from 4.009 to 4.360 GeV

Cited by in corpus (6)

• Charmonium spectrum and their electromagnetic transitions with higher multipole contributions
• Measurement of $e^{+}{e}^{-}\to \gamma {\chi }_{c0,c1,c2}$ cross sections at center-of-mass energies between 3.77 and 4.60 GeV
• Observation of the decays ${\chi }_{cJ}\to \varphi \varphi \eta$
• Light meson emissions of the selected charmonium-like states within compact tetraquark configurations
• Radiative transitions of charmonium states in a constituent quark model
• Dissociation cross sections of $\psi (3770)$, $\psi (4040)$, $\psi (4160)$, and $\psi (4415)$ mesons with nucleons