Observation of the decay $D^+_s\to \omega\pi^+\eta$

TL;DR

This paper reports the first observation of the decay $D_s^\pm \to \omega \pi^\pm \eta$ using electron-positron collision data, measuring its branching fraction with high statistical significance.

Contribution

First observation of the decay $D_s^\pm \to \omega \pi^\pm \eta$ with a measured branching fraction, expanding understanding of charm meson decay modes.

Findings

Decay observed with 7.6σ significance

Branching fraction measured as (0.54±0.12±0.04)%

Provides new data on charm meson decay channels

Abstract

Using 7.33 fb$^{-1}$ of $e^+e^-$ collision data collected by the BESIII detector at center-of-mass energies between 4.128 and 4.226~GeV, we observe for the first time the decay $D^{\pm}_s\to \omega\pi^{\pm}\eta$ with a statistical significance of 7.6$\sigma$. The measured branching fraction of this decay is $(0.54\pm0.12\pm0.04)\%$, where the first uncertainty is statistical and the second is systematic.