Using a data sample of $(2712.4 \pm 14.3)\times10^{6}$ $\psi(3686)$ events collected with the BESIII detector operating at the BEPCII collider, we report the first observation of the decays $\chi_{cJ}\to2K^+2K^-\omega$ and $\chi_{cJ}\to\phi K^+K^-\omega$ $(J=0,1,2)$ via the radiative transitions $\psi(3686)\to\gamma\chi_{cJ}$. The branching fractions of these decays are measured for the first time, and the statistical significance of each signal exceeds $10\sigma$.
Measurements of the branching fractions of 𝜒𝑐𝐽→2𝐾+2𝐾−𝜔 and 𝜙𝐾+𝐾−𝜔 decays
Garzia, I.;Melendi, F. M.;
2026
Abstract
Using a data sample of $(2712.4 \pm 14.3)\times10^{6}$ $\psi(3686)$ events collected with the BESIII detector operating at the BEPCII collider, we report the first observation of the decays $\chi_{cJ}\to2K^+2K^-\omega$ and $\chi_{cJ}\to\phi K^+K^-\omega$ $(J=0,1,2)$ via the radiative transitions $\psi(3686)\to\gamma\chi_{cJ}$. The branching fractions of these decays are measured for the first time, and the statistical significance of each signal exceeds $10\sigma$.File in questo prodotto:
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