Search for ${\eta }_c^{\prime }$ decays into vector meson pairs

Abstract

The processes $\etacpto ρ^{0}ρ^{0}$, $K^{\ast 0}{\bar{K}}^{\ast 0}$, and $\varphi \varphi$ are searched for using a sample of $1.06\times 10^8$ $\psip$ events collected with the BESIII detector at the BEPCII collider. No signals are observed in any of the three final states. The upper limits on the decay branching fractions are determined to be $\mathcal{B}(\etacptoρ^{0}ρ^{0})<3.1\times10^{-3}$, $\mathcal{B}(\etacpto K^{*0}\bar{K}^{*0})<5.4 \times10^{-3}$, and $\mathcal{B}(\etacptoϕϕ)<2.0\times10^{-3}$ at the 90% confidence level. The upper limits are lower than the existing theoretical predictions.

7 pages, 9 figures, 2 tables

References in corpus (13)

• Design and Construction of the BESIII Detector
• Measurement of Double Charmonium Production in $e^{+}{e}^{-}$ Annihilations at $\sqrt{s}=10.6$ GeV
• Observation of the eta_c(2S) in exclusive B-->K KsK-pi+ decays
• Branching fraction measurements of χ_{c0} and χ_{c2} to π^0π^0 and ηη
• Study of ${\chi }_{cJ}$ radiative decays into a vector meson
• Observation of eta_c^{prime} Production in gamma gamma Fusion at CLEO
• J/psi and psi(2S) Radiative Transitions to eta_c
• Measurements of the mass and width of the eta_c meson and of an eta_c(2S) candidate
• The evasion of helicity selection rule in ${\chi }_{c1}\to VV$ and ${\chi }_{c2}\to VP$ via intermediate charmed meson loops
• Further study of the helicity selection rule evading mechanism in ${\eta }_c$, ${\chi }_{c0}$ and $h_c$ decaying to baryon anti-baryon pairs
• Observation of ${\chi }_{c1}$ decays into vector meson pairs $\varphi \varphi$, $\omega \omega$, and $\omega \varphi$
• Observation of eta_c(1S) and eta_c(2S) decays to K+ K- pi+ pi- pi0 in two-photon interactions
• Puzzles in charmonium decays

Cited by in corpus (6)

• Evidence for η_{c}(2S) in ψ(3686) \to γK_{S}^{0}K^{\pm}π^{\mp}π^{+}π^{-}
• Updated study of the ${\eta }_c$ and ${\eta }_c^{\prime }$ decays into light vector mesons
• Precision measurement of the $D^{\ast 0}$ decay branching fractions
• Search for the ${\eta }_c(2S)/h_c\to p\bar{p}$ decays and measurements of the ${\chi }_{cJ}\to p\bar{p}$ branching fractions
• Evidence for ${\eta }_c$(2S)$\to\pipieta$ decay
• Recent Progress on Charmonium Decays at BESIII