Partial wave analysis of $\psi (2S)\to p\bar{p}\eta$

Abstract

Using a sample of $1.06\times 10^8$ $\psi (2S)$ events collected with the BESIII detector at BEPCII, the decay $\psi (2S)\to p\bar{p}\eta$ is studied. A partial wave analysis determines that the intermediate state N(1535) with a mass of $1524\pm 5_{-4}^{+10}$ MeV/$c^2$ and a width of $130_{-24-10}^{+27+57}$ MeV/$c^2$ is dominant in the decay; the product branching fraction is determined to be $B(\psi (2S)\to N(1535)\bar{p})\times B(N(1535)\to p\eta )+c.c.=(5.2\pm 0.3_{-1.2}^{+3.2})\times 10^{-5}$. Furthermore, the branching fraction of $\psi (2S)\to \eta p\bar{p}$ is measured to be $(6.4\pm 0.2\pm 0.6)\times 10^{-5}$.

References in corpus (5)

• Study of the gp-->etap reaction with the Crystal Ball detector at the Mainz Microtron(MAMI-C)
• Study of psi(2S) Decays to gamma p bar{p}, pi^0 p bar{p} and eta p bar{p} and Search for p bar{p} Threshold Enhancements
• Evidence for a parity doublet Delta(1920)P_{33} and Delta(1940)D_{33}$ from γp\to pπ^0η
• Determination of the number of ${\psi }^{\prime }$ event at BESIII
• Observation of two new $N^{\ast }$ resonances in $\psi (3686)\to p\bar{p}{\pi }^0$

Cited by in corpus (9)

• On the near-threshold $\bar{p}p$ invariant mass spectrum measured in $J/\psi$ and ${\psi }^{\prime }$ decays
• Theoretical study of $N(1535)$ and ${\Sigma }^{\ast }(1/2^{-})$ in the Cabibbo-favored process ${\Lambda }_c^{+}\to p{\bar{K}}^0\eta$
• Angular distributions in $J/\psi \to p\bar{p}{\pi }^0(\eta )$ decays
• Detecting the pure triangle sigularity effect through the $\psi (2S)\to p\bar{p}\eta /p\bar{p}{\pi }^0$ process
• Measurement of $e^{+}{e}^{-}\to \Lambda \bar{\Lambda }\eta$ from 3.5106 to 4.6988 GeV and study of $\Lambda \bar{\Lambda }$ mass threshold enhancement
• The effective radius for production of baryon-antibaryon pairs from $\psi$ decays
• $N^{\ast }$ Production from $e^{+}{e}^{-}$ Annihilations
• Role of the low-lying nucleon resonances in the $p\bar{p}\to \psi \eta$ reaction
• Partial wave analyses of $\psi (3686)\to p\bar{p}{\pi }^0$ and $\psi (3686)\to p\bar{p}\eta$