DIRECT TESTS OF T AND CPT SYMMETRIES IN THE ENTANGLED NEUTRAL KAON SYSTEM AT A ϕ-FACTORY

Abstract

A novel method to perform a direct T (or CPT) symmetry test in the neutral kaon system is presented. This is based on the comparison of suitable transition probabilities, where the required interchange of in ↔ out states for a given process is obtained exploiting the Einstein-Podolsky-Rosen correlations of neutral kaon pairs produced at a ϕ-factory. The possibility to perform these tests with the KLOE-2 experiment at DAΦNE, the Frascati ϕ-factory, is also briefly discussed.