Dark Searches and ΥΥ Physics at KLOE.

The search for a dark sector mediated by a new gauge boson, the dark photon, is motivated by many astrophysical anomalies and by the g - 2 discrepancy. The KLOE experiment, operating at the e+e- DAϴNE collider in Frascati, searched for a visibly-decaying dark photon by investigating the ϕ-Dalitz decay into the η meson, the dark photon production from continuum, and the Higgsstrahlung process. The KLOE-2 run started in November 2014, after the upgrade of both, DAϴNE and the KLOE apparatus. In particular, two high electron and positron tagger stations were installed in the DAϴNE layout to study ΥΥ interactions at 1 GeV. Progress status of the project is given. [ABSTRACT FROM AUTHOR]