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.(c) 2023 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons .org /licenses /by /4 .0/). Funded by SCOAP3.
Direct tests of T, CP, CPT symmetries in transitions of neutral K mesons with the KLOE experiment / Babusci, D; Berlowski, M; Bloise, C; Bossi, F; Branchini, P; Cao, B; Ceradini, F; Ciambrone, P; Curciarello, F; Czerwinski, E; D'Agostini, G; D'Amico, R; Danè, E; De Leo, V; De Lucia, E; De Santis, A; De Simone, P; Di Domenico, A; Diociaiuti, E; Domenici, D; D'Uffizi, A; Fantini, G; Gajos, A; Gamrat, S; Gauzzi, P; Giovannella, S; Graziani, E; Kang, X; Kupsc, A; Mandaglio, G; Martini, M; Miscetti, S; Moskal, P; Passeri, A; del Río, Ep; Schioppa, M; Selce, A; Silarski, M; Sirghi, F; Solodov, Ep; Wislicki, W; Wolke, M; Bernabéu, J. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 845:(2023), pp. 1-11. [10.1016/j.physletb.2023.138164]
Direct tests of T, CP, CPT symmetries in transitions of neutral K mesons with the KLOE experiment
D'Agostini, G;D'Amico, R;De Leo, V;De Lucia, E;Di Domenico, A;Fantini, G;Gauzzi, P;Kang, X;
2023
Abstract
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.(c) 2023 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons .org /licenses /by /4 .0/). Funded by SCOAP3.| File | Dimensione | Formato | |
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