- Tytuł:
- Direct tests of T, CP, CPT symmetries in transitions of neutral K mesons with the KLOE experiment
- Autorzy:
-
Selce, A.
Bernabéu, J.
Kupść, A.
Di Domenico, A.
De Leo, V.
Mandaglio, G.
Martini, M.
Perez del Rio, Elena
Czerwiński, Eryk
Schioppa, M.
Wolke, M.
Babusci, D.
Cao, B.
D'Uffizi, A.
D'Amico, R.
Ciambrone, P.
Miscetti, S.
Gamrat, Szymon
Kang, X.
De Santis, A.
Bloise, C.
Domenici, D.
Gajos, Aleksander
Curciarello, F.
Fantini, G.
Bossi, F.
Graziani, E.
Diociaiuti, E.
Passeri, A.
Ceradini, F.
Gauzzi, P.
Branchini, P.
Danè, E.
D'Agostini, G.
Giovannella, S.
Wiślicki, W.
Solodov, E.P.
De Simone, P.
Moskal, Paweł
Berłowski, M.
Silarski, Michał
Sirghi, F.
De Lucia, E. - Opis:
- 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 $K^{0}{\bar{K}}^{0}$ pairs produced at a $\phi$-factory. A data sample collected by the KLOE experiment at DAΦNE corresponding to an integrated luminosity of about 1.7 fb$^{−1}$ is analysed to study the Δt distributions of the $\phi \to K_{S}K_{L} \to \pi^{+}\pi^{-}\pi^{\pm}e^{\mp}v$ and $\phi \to K_{S}K_{L} \to \pi^{\pm}e^{\mp}v 3\pi^{0}$ processes, with Δt the difference of the kaon decay times. A comparison of the measured Δt distributions in the asymptotic region Δt $\gg \tau _{S}$ 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.
- Dostawca treści:
- Repozytorium Uniwersytetu Jagiellońskiego
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