Paper detail

Study of the $K_SK_L\toπ\ellν3 π^0$ process for time reversal symmetry test at KLOE-2

This work presents prospects for conducting a novel direct test of time-reversal symmetry at the KLOE-2 experiment. Quantum entanglement of neutral K meson pairs uniquely available at KLOE-2 allows to probe directly the time-reversal symmetry (T) independently of CP violation. This is achieved by a comparison of probabilities for a transition between flavour and CP-definite states and its inverse obtained through exchange of initial and final states. As such a test requires the reconstruction of the $K_L\to 3π^0$ decay accompanied by $K_S\toπ^{\pm}\ell^{\mp}ν$ with good timing information, a new reconstruction method for this process is also presented which is capable of reconstructing the $K_L\to 3π^0$ decay with decay time resolution of O(1$τ_S$).