S. Loffredo

TL;DR: In this paper, an upper bound of 90% C.L. on the ratio between the U coupling constant and the fine structure constant of alpha/alpha < 1.7 fb(-1) was established.

TL;DR: The existence of a new force beyond the Standard Model is compelling because it could explain several striking astrophysical observations which fail standard interpretations as discussed by the authors. But the existence of new forces beyond the standard model cannot explain all the observed phenomena.

TL;DR: In this article, the authors search for a light vector boson U, the possible carrier of a dark force, with the KLOE detector at the DA Phi NE e(+)e(-) collider, motivated by astrophysical evidence for the presence of dark matter in the Universe.

TL;DR: In this article, the authors presented a search for the dark photon in e + e − → U γ, U → π + π − based on 28 million e+ e −, π+ π− − γ events collected at DAΦNE by the KLOE experiment.

TL;DR: In this article, the authors present an analysis of the CP-violating process of neutral kaon pairs produced in phi decays in anti-symmetric entangled state can be exploited to search for violation of CPT symmetry and Lorentz invariance.