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 (3)

• 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 eta_c(1S) and eta_c(2S) decays to K+ K- pi+ pi- pi0 in two-photon interactions

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