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February 28, 2024 to March 6, 2024
HSE Study Center “Voronovo”
Europe/Moscow timezone

The branching fractions measurements of $J/\psi \rightarrow \pi^+ \pi^- \eta$ and $J/\psi \rightarrow K^+ K^- \eta$ at KEDR

Mar 3, 2024, 6:18 PM
12m
HSE Study Center “Voronovo”

HSE Study Center “Voronovo”

Voronovskoe, Moscow Russian Federation
Talk (10+2 min) Young Scientist Forum Young Scientist Forum

Speaker

Dmitry Kyshtymov (Budker Institute of Nuclear Physics)

Description

This work presents results of the branching fractions measurements of $J/\psi$ decay into the final states $\pi^+ \pi^-\eta$ and $K^+ K^-\eta$ at KEDR.
KEDR is a universal magnetic detector located at the VEPP-4M collider in Novosibirsk. The current analysis was performed on 5.23 million of $J/\psi$ decays.
The process into $\pi^+ \pi^-\eta$ has been studied through $\rho$ and $\omega$ resonances, taking into account their interference, the process into $K^+ K^-\eta$ has been researched through $\phi$ resonance. In both cases, $\eta$ meson decays into $\gamma\gamma$.
As a result of the work, the branching fractions were obtained, the accuracy of which are comparable to the results of previous measurements.

Primary author

Dmitry Kyshtymov (Budker Institute of Nuclear Physics)

Presentation materials