Search for the process $e^{+}{e}^{-}\to {\eta }^{\prime }(958)$ with the CMD-3 detector

Abstract

A search for the process $\epem\to η^\prime(958)$ in the $\pipiη\to\pipiγγ$ final state has been performed with the CMD-3 detector at the VEPP-2000 $e^{+}{e}^{-}$ collider. Using an integrated luminosity of 2.69 pb${}^{-1}$ collected at the center-of-mass energy \Ecm = 957.68 MeV we set an upper limit for the product of electronic width and branching fractions $Γ_{η^\prime(958)\to\epem}\cdot\BR_{η^\prime(958)\to\pipiη}\cdot\BR_{η\toγγ}<0.00041$ eV at 90\% C.L.

12 pages, 5 figures, submitted to Physics Letters B

References in corpus (7)

• A Unified Approach to the Classical Statistical Analysis of Small Signals
• Quest for precision in hadronic cross sections at low energy: Monte Carlo tools vs. experimental data
• Updated Estimate of the Muon Magnetic Moment Using Revised Results from e+e- Annihilation
• Towards a data-driven analysis of hadronic light-by-light scattering
• Dispersive approach to hadronic light-by-light scattering
• Backscattering of Laser Radiation on Ultra-Relativistic Electrons in Transverse Magnetic Field: Evidence of Photon Interference in a MeV Scale
• CVC and τ\rightarrow η(η^\prime)π^{-}π^{0}ν_τ

Cited by in corpus (15)

• The anomalous magnetic moment of the muon in the Standard Model
• Pseudoscalar-pole contribution to the $(g_{\mu }-2)$: a rational approach
• Precision tests of fundamental physics with $\eta$ and ${\eta }^{\prime }$ mesons
• Measurement of the $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}$ process cross section with the SND detector at the VEPP-2000 collider in the energy region $0.525<\sqrt{s}<0.883$ GeV
• $\eta$ and ${\eta }^{\prime }$ decays into lepton pairs
• What can we learn about light-meson interactions at electron-positron colliders?
• Search for the ${\eta }^{\prime }\to e^{+}{e}^{-}$ decay with the SND detector
• $f_1(1285)\to e^{+}{e}^{-}$ decay and direct $f_1$ production in $e^{+}{e}^{-}$ collisions
• Study of the Process $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}{\pi }^{+}{\pi }^{-}$ IN THE C.M. Energy Range 920--1060 MeV with the CMD-3 Detector
• First Observation of the Direct Production of the ${\chi }_{c1}$ in $e^{+}{e}^{-}$ Annihilation
• Search for the process ${\mathbf{e}}^{+}{\mathbf{e}}^{-}\to \eta$
• On a search for the $\eta \to e^{+}{e}^{-}$ decay at the VEPP-2000 $e^{+}{e}^{-}$ collider
• Pseudoscalar transition form factors: $(g-2)$ of the muon, pseudoscalar decays into lepton pairs, and the $\eta -{\eta }^{\prime }$ mixing
• Pseudoscalar decays into lepton pairs from rational approximants
• ${\eta }_c\to l^{+}{l}^{-}$ and ${\chi }_{c0}\to l^{+}{l}^{-}$ decays revisited