Moscow International School of Physics 2024

The branching fractions measurements of J/ψ→π+π−η and J/ψ→K+K−η at KEDR

3 Mar 2024, 18:18

12m

HSE Study Center “Voronovo”

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 $\varphi$ 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.

Presentation materials

Kyshtymov_MISP2024.pdf