Measurements of $\psi (2S)$ decays into $\varphi {\pi }^0$, $\varphi \eta$, $\varphi {\eta }^{{}^{\prime }}$, $\omega \eta$, and $\omega {\eta }^{{}^{\prime }}$

Abstract

Decays of the $\psi (2S)$ into Vector plus Pseudoscalar meson final states have been studied with 14 million $\psi (2S)$ events collected with the BESII detector. Branching fractions of $ψ(2S) \rarϕη$, $ϕ\etap$, and $ω\etap$, and upper limits of $ψ(2S) \rar ϕ\piz$ and $\omega \eta$ are obtained: $B(ψ(2S) \rarϕη) = (3.3\pm 1.1 \pm 0.5) \times 10^{-5}$, $B(ψ(2S) \rarϕ\etap) = (3.1\pm 1.4 \pm 0.7)\times 10^{-5}$, and $B(ψ(2S) \rarω\etap) = (3.2^{+2.4}_{-2.0} \pm 0.7) \times 10^{-5}$; and $B(ψ(2S) \rarϕ\piz) < 0.40 \times 10^{-5}$, and $B(ψ(2S) \rarωη) < 3.1 \times 10^{-5}$ at the 90 % C.L.. These results are used to test the pQCD ``12% rule''.

7 pages, 7 figures, 2 tables

References in corpus (12)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Including Systematic Uncertainties in Confidence Interval Construction for Poisson Statistics
• Charmless Final States and S--D-wave mixing in the ${\psi }^{\prime \prime }$
• Intrinsic Charm of Vector Mesons: A Possible Solution of the "rho pi" Puzzle
• A possible hadronic excess in psi(2S) decay and rho-pi puzzle
• Measurement of the Branching Fraction of J/psi --> pi+ pi- pi0
• An Explanation for the rho-pi Puzzle of J/psi and psi' Decays
• Implications of light-quark admixtures on charmonium decays into meson pairs
• Possible large phase in psi(2S) -> 1-0- Decays
• The interference between virtual photon and 1-- charmonium in e+e-experiment
• Reexamining radiative decays of $1^{--}$ quarkonium into ${\eta }^{\prime }$ and $\eta$
• Elusive vector glueball

Cited by in corpus (12)

• Heavy quarkonium: progress, puzzles, and opportunities
• Quarkonia and their transitions
• Decays of $J/\psi$ and ${\psi }^{\prime }$ into vector and pseudoscalar meson and the pseudoscalar glueball-$q\bar{q}$ mixing
• Psi'' decays to charmless final states
• Observation of 1^-0^- Final States from psi(2S) Decays and e^+e^- Annihilation
• Branching Fraction Measurements of psi(2S) Decay to Baryon-Antibaryon Final States
• Search for psi(3770)\raρπat the BESII detector at the Beijing Electron-Positron Collider
• Measurements of $\psip$ decays into $\gamma K\bar{K}\pi$ and $γη\pipi$
• Survival before annihilation in Psi-prime decays
• Experimental study of psi' decays to K+K- pi^0 and K+K- eta
• Measurement of Branching Fractions of $\psi (3686)\to \varphi {\eta }^{\prime },\varphi f_1(1285)$ and $\varphi \eta (1405)$
• Pseudoscalar mixing in J/psi and psi(2S) decay