Search for the $U$ boson in the process $e^{+}{e}^{-}\to U\gamma$, $U\to e^{+}{e}^{-}$ with the KLOE detector

Abstract

Dark Matter and Dark Energy are two of the most fundamental open questions in physics today. The existence of a light dark-force mediator has been hypothesized as a possible explanation for several unexplained physical phenomena. A new search for this mediator, the dark photon $U$, is underway using data collected with the KLOE detector at DA$\Phi$NE. We describe the strategy we will use in our search for a resonant peak in the electron-positron invariant mass spectrum from the process $e^{+}{e}^{-}\to U\gamma$ with $U\to e^{+}{e}^{-}$. So far we found no evidence for the process and set a preliminary upper limit on the level of mixing between the secluded dark sector and the standard model.

ACTA PHYSICA POLONICA B vol. 46 (2015)

References in corpus (4)

• Search for a dark photon in e+e- collisions at BABAR
• Measurement of the charged kaon lifetime with the KLOE detector
• Study of the $K_S{K}_L\to \pi \ell \nu 3{\pi }^0$ process for time reversal symmetry test at KLOE-2
• $K_S$ semileptonic decays and test of $\mathcal{C}\mathcal{P}\mathcal{T}$ symmetry with the KLOE detector