Speaker
Description
The KLOE-2 experiment continues and extends the program of its predecessor KLOE in the field of discrete symmetry tests with the K meson system, among other studies which comprise light meson spectroscopy, dark matter searches and $\gamma\gamma$ physics. Together, KLOE and KLOE-2 have recorded the largest sample (almost 8 fb$^{-1}$) of e+e- collisions at the energy equal to $\phi$ meson mass, amounting to 2.4$\times$10$^{10}$ of produced $\phi$ mesons.
The talk will report on the latest results and ongoing analyses of KLOE and KLOE-2 concerning discrete symmetry tests and measurements of symmetry-violating observables. A measurement of the CPT violation sensitive asymmetry in semileptonic decays of $K_S$ with 1.7 fb$^{-1}$ of KLOE data will be presented, which improves the sensitivity w.r.t. previous measurements about twice. Moreover, status of direct tests of T and CPT in transitions of neutral kaons performed with the $\phi\to K_SK_L\to \pi e\nu,3\pi^0(2\pi^0)$ processes will be reported, followed by the search of the CP-violating decay $K_S\to 3\pi^0$ using the recently acquired data of KLOE-2.
