A one-month HIAF simulation projects branching-ratio upper limits of about 10^-9 (e+e-) and 10^-6 (pi pi) for eta decays to a dark scalar, with parameter sensitivities beyond current bounds.
The KLOE-2 experiment: overview of recent results
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abstract
The KLOE detector at the DA$\Phi$NE $\phi$-factory has been operating in two periods from 2001 to 2006 and from 2014 to 2018 collecting a large sample of $\phi$-meson decays. This allowed to perform precision measurements and studies of fundamental symmetries, and searches of New Physics phenomena. In this overview, the results of KLOE and KLOE-2 Collaborations are presented. The most recent results from the KLOE experiment are discussed, covering: the measurement of the running fine-structure constant $\alpha_{em}$, the Dalitz plot measurement of $\eta \rightarrow \pi^+\pi^-\pi^0$, the search of a U boson, tests of discrete symmetries and quantum decoherence.
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Simulation of dark scalar particle sensitivity in $\eta$ rare decay channels at HIAF
A one-month HIAF simulation projects branching-ratio upper limits of about 10^-9 (e+e-) and 10^-6 (pi pi) for eta decays to a dark scalar, with parameter sensitivities beyond current bounds.