Branching fraction measurements of $\psi (3686)\to \gamma {\chi }_{cJ}$

Abstract

Using a sample of 106 million $\psi (3686)$ decays, the branching fractions of $\psi (3686)\to \gamma {\chi }_{c0},\psi (3686)\to \gamma {\chi }_{c1}$, and $\psi (3686)\to \gamma {\chi }_{c2}$ are measured with improved precision to be $(9.389\pm 0.014\pm 0.332)\%$, $(9.905\pm 0.011\pm 0.353)\%$, and $(9.621\pm 0.013\pm 0.272)\%$, respectively, where the first uncertainties are statistical and the second ones are systematic. The product branching fractions of $\psi (3686)\to \gamma {\chi }_{c1},{\chi }_{c1}\to \gamma J/\psi$ and $\psi (3686)\to \gamma {\chi }_{c2},{\chi }_{c2}\to \gamma J/\psi$ and the branching fractions of ${\chi }_{c1}\to \gamma J/\psi$ and ${\chi }_{c2}\to \gamma J/\psi$ are also presented.

arXiv comment14 pages, 6 figures

References in corpus (19)

• Design and Construction of the BESIII Detector
• The Precision Monte Carlo Event Generator KK For Two-Fermion Final States In e+e- Collisions
• Coherent Exclusive Exponentiation For Precision Monte Carlo Calculations
• Higher Charmonia
• Properties of heavy quarkonia and B_c mesons in the relativistic quark model
• Higher Charmonia and X,Y,Z states with Screened Potential
• Quarkonia and their transitions
• Study of ${\chi }_{cJ}$ radiative decays into a vector meson
• Charmonium spectrum and their electromagnetic transitions with higher multipole contributions
• Measurements of h_c(^1P_1) in psi' Decays
• Study of $\psi (3686)\to {\pi }^0{h}_c,h_c\to \gamma {\eta }_c$ via ${\eta }_c$ exclusive decays
• Branching Fractions for Transitions of psi(2S) to J/psi
• Determination of the number of ${\psi }^{\prime }$ event at BESIII
• Photon Transitions in ψ(2S) Decays to χ_{cJ}(1P) and η_c(1S)
• Branching Fractions for psi(2S) to J/psi Transitions
• Precision Measurements of $\mathcal{B}[\psi (3686)\to {\pi }^{+}{\pi }^{-}J/\psi ]$ and $\mathcal{B}[J/\psi \to l^{+}{l}^{-}]$
• Measurement of higher-order multipole amplitudes in $\psi (3686)\to \gamma {\chi }_{c1,2}$ with ${\chi }_{c1,2}\to \gamma J/\psi$ and search for the transition ${\eta }_c(2S)\to \gamma J/\psi$
• Evidence for the Direct Two-Photon Transition from $\psi (3686)$ to $J/\psi$
• Precision measurements of branching fractions for ${\psi }^{\prime }\to {\pi }^{0}J\psi$ and $\eta J\psi$

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• Partial wave effects in the heavy quarkonium radiative electromagnetic decays
• Search for the decay $D_s^{+}\to \omega e^{+}\nu$
• Shedding light on charmonium
• Inclusive charged and neutral particle multiplicity distributions in ${\chi }_{cJ}$ and $J/\psi$ decays