Measurement of the branching fraction for $\psi(3686)\to \omega K^0_SK^0_S$

TL;DR

This paper reports the first observation and measurement of the branching fraction for the decay of $ ext{psi}(3686)$ into $ ext{omega} ext{K}_S^0 ext{K}_S^0$ using a large dataset from the BESIII detector.

Contribution

The first measurement of the branching fraction for $ ext{psi}(3686) o ext{omega} ext{K}_S^0 ext{K}_S^0$ decay based on extensive data analysis.

Findings

Branching fraction measured as (7.04 ± 0.39 ± 0.36) × 10^{-5}

First observation of this decay mode

Data collected from 448.1 million $ ext{psi}(3686)$ events

Abstract

Analyzing $(448.1\pm2.9)\times10^6$ $\psi(3686)$ events collected with the BESIII detector at the BEPCII collider, the $\psi(3686)\to \omega K_{S}^{0}K_{S}^{0}$ decay is observed for the first time. The branching fraction for this decay is determined to be $\mathcal{B}_{\psi(3686)\to \omega K_{S}^{0}K^{0}_{S}}$=$(7.04\pm0.39\pm0.36)$$\times10^{-5}$, where the first uncertainty is statistical and the second is systematic.