Dark Forces at DA$\Phi$NE

Abstract

The DA$\Phi$NE $\Phi$-factory is an ideal place to search for forces beyond the Standard Model. By using the KLOE detector, limits on U-boson coupling ${\epsilon }^2$ of the order of $10^{-5}÷10^{-7}$ and on the ${\alpha }_{\mathrm{D}}\times {\epsilon }^2$ product have been set through the study of the $\Phi$ Dalitz decay, U$\gamma$ events and the Higgsstrahlung process. An improvement of these limits is expected thanks to the KLOE detector and DA$\Phi$NE upgrades of KLOE-2.