TY  - JOUR
AU  - KLOE-2 Collaboration (Babusci, D. et al
AU  - Bernabeu, J.
PY  - 2023
DA  - 2023//
TI  - Direct tests of T, CP, CPT symmetries in transitions of neutral K mesons with the KLOE experiment
T2  - Phys. Lett. B
JO  - Physics Letters B
SP  - 138164 - 11pp
VL  - 845
PB  - Elsevier
KW  - Discrete and finite symmetries
KW  - Kaon physics
KW  - CP violation
AB  - Tests of the T, CP and CPT symmetries in the neutral kaon system are performed by the direct comparison of the probabilities of a kaon transition process to its symmetry-conjugate. The exchange of in and out states required for a genuine test involving an antiunitary transformation implied by time-reversal is implemented exploiting the entanglement of K0K0 pairs produced at a 0 -factory.A data sample collected by the KLOE experiment at DAONE corresponding to an integrated luminosity of about 1.7 fb-1 is analysed to study the At distributions of the 0 -> KSKL -> pi+pi- pi +/- e -/+ v and 0 -> KSKL -> pi +/- e -/+ v3 pi 0 processes, with At the difference of the kaon decay times. A comparison of the measured At distributions in the asymptotic region At ⠅ iS allows to test for the first time T and CPT symmetries in kaon transitions with a precision of few percent, and to observe CP violation with this novel method.
SN  - 0370-2693
UR  - https://arxiv.org/abs/2211.12377
UR  - https://doi.org/10.1016/j.physletb.2023.138164
DO  - 10.1016/j.physletb.2023.138164
LA  - English
N1  - WOS:001080223500001
ID  - KLOE-2CollaborationBabusci+Bernabeu2023
ER  -