Measurement of Branching Fractions of $\psi (3686)\to \varphi {\eta }^{\prime },\varphi f_1(1285)$ and $\varphi \eta (1405)$

Abstract

Using a sample of $448.1\times 10^6$ $\psi (3686)$ events collected with the BESIII detector, we perform a study of the decay $\psi (3686)\to \varphi {\pi }^{+}{\pi }^{-}\eta$. The branching fraction of $\psi (3686)\to \varphi {\eta }^{\prime }$ is determined to be $(1.51\pm 0.16\pm 0.12)\times 10^{-5}$, which is consistent with the previous measurement but with significantly improved precision. The resonances $f_1(1285)$ and $\eta (1405)$ are clearly observed in the ${\pi }^{+}{\pi }^{-}\eta$ mass spectrum with statistical significances of $18\sigma$ and $9.7\sigma$, respectively. The corresponding product branching fractions are measured to be $\mathcal{B}(\psi (3686)\to \varphi f_1(1285),f_1(1285)\to {\pi }^{+}{\pi }^{-}\eta )=(1.03\pm 0.10\pm 0.09)\times 10^{-5}$ and $\mathcal{B}(\psi (3686)\to \varphi \eta (1405),\eta (1405)\to {\pi }^{+}{\pi }^{-}\eta )=(8.46\pm 1.37\pm 0.92)\times 10^{-6}$.

References in corpus (12)

• 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
• Kernel Estimation in High-Energy Physics
• Measurement of the ${\mathrm{e}}^{+}{\mathrm{e}}^{-}\to {\pi }^{+}{\pi }^{-}$ Cross Section between 600 and 900 MeV Using Initial State Radiation
• Search for hadronic transition ${\chi }_{cJ}\to {\eta }_c{\pi }^{+}{\pi }^{-}$ and observation of ${\chi }_{cJ}\to K\bar{K}\pi \pi \pi$
• Study of ${\chi }_{cJ}$ radiative decays into a vector meson
• Determination of the number of $\psi (3686)$ events at BESIII
• Study of J/psi->eta phi pi+pi- at BESIII
• Study of resonant structure around 1.8 GeV/$c^2$ and $\eta (1405)$ in $J/\psi \to \omega \eta {\pi }^{+}{\pi }^{-}$
• Measurements of $\psi (2S)$ decays into $\varphi {\pi }^0$, $\varphi \eta$, $\varphi {\eta }^{{}^{\prime }}$, $\omega \eta$, and $\omega {\eta }^{{}^{\prime }}$
• Search for the weak decay ${\eta }^{\prime }\to K^{\pm }{\pi }^{\mp }$ and precise measurement of the branching fraction $\mathcal{B}(J/\psi \to \varphi {\eta }^{\prime })$

Cited by in corpus (1)

• Three-body unitary coupled-channel approach to radiative $J/\psi$ decays and $\eta (1405/1475)$