A precise measurement of the direct CP violation parameter $\Re(\epsilon'/\epsilon)$

The direct CP violation parameter $\Re(\epsilon'/\epsilon)$ has been measured from the decay rates of neutral kaons into two pions using the NA48 detector at the CERN SPS. With 3.3 million $K_{L} \to \pi^{0}\pi^{0}$ events collected during the 1998 and 1999 running periods, a result of $\Re(\ep...

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Detalles Bibliográficos
Autores principales: Lai, A., Marras, D., Bevan, A., Dosanjh, R.S., Gershon, T.J., Hay, B., Kalmus, G.E., Lazzeroni, C., Munday, D.J., Needham, M.D., Olaiya, E., Parker, Michael Andrew, White, T.O., Wotton, S.A., Barr, G., Bocquet, G., Ceccucci, A., Cuhadar-Donszelmann, T., Cundy, D., D'Agonstini, G., Doble, N., Falaleev, V., Funk, W., Gatignon, L., Gonidec, A., Gorini, B., Govi, G., Grafstrom, P., Kubischta, W., Lacourt, A., Lenti, M., Luitz, S., Matheys, J.P., Mikulec, I., Norton, A., Palestini, S., Panzer-Steindel, B., Schinzel, D., Tatishvili, G., Taureg, H., Velasco, M., Vossnack, O., Wahl, Heinrich, Cheshkov, C., Gaponenko, A., Hristov, P., Kekelidze, V., Madigojine, D., Molokanova, N., Potrebenikov, Yu., Tkatchev, A., Zinchenko, A., Knowles, I., Martin, V., Parsons, H., Sacco, R., Walker, A., Contalbrigo, M., Dalpiaz, P., Duclos, J., Frabetti, P.L., Gianoli, A., Martini, M., Petrucci, F., Savrie, M., Scarpa, M., Bizzeti, A., Calvetti, M., Collazuol, G., Graziani, G., Iacopini, E., Martelli, F., Veltri, M., Becker, H.G., Blumer, H., Coward, D.H., Eppard, M., Fox, H., Hirstius, A., Holtz, K., Kalter, A., Kleinknecht, K., Koch, U., Kopke, L., Lopes da Silva, P., Marouelli, P., Pellmann, I., Peters, A., Schmidt, S.A., Schonarting, V., Schue, Y., Wanke, R., Winhart, A., Wittgen, M., Chollet, J.C., Crepe-Renaudin, Sabine, Fayard, L., Iconomidou-Fayard, L., Ocariz, J., Unal, G., Wingerter-Seez, I., Anzivino, G., Cenci, P., Imbergamo, E., Lubrano, P., Mestvirishvili, A., Nappi, A., Pepe, M., Piccini, M., Bertanza, L., Calafiura, P., Carosi, R., Casali, R., Cerri, C., Cirilli, M., Costantini, F., Fantechi, R., Giudici, S., Mannelli, I., Marzulli, V., Pierazzini, G., Sozzi, M., Cheze, J.B., Cogan, J., De Beer, M., Debu, P., Derue, F., Formica, A., Granier de Cassagnac, R., Mazzucato, E., Peyaud, B., Turlay, R., Vallage, B., Augustin, I., Bender, M., Holder, M., Maier, A., Ziolkowski, M., Arcidiacono, R., Biino, C., Cartiglia, N., Guida, R., Marchetto, F., Menichetti, Ezio A., Pastrone, N., Nassalski, J., Rondio, E., Szleper, M., Wislicki, W., Wronka, S., Dibon, H., Fischer, G., Jeitler, M., Markytan, M., Neuhofer, G., Pernicka, M., Taurok, A., Widhalm, L.
Lenguaje:eng
Publicado: 2001
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1007/s100520100822
http://cds.cern.ch/record/522234
Descripción
Sumario:The direct CP violation parameter $\Re(\epsilon'/\epsilon)$ has been measured from the decay rates of neutral kaons into two pions using the NA48 detector at the CERN SPS. With 3.3 million $K_{L} \to \pi^{0}\pi^{0}$ events collected during the 1998 and 1999 running periods, a result of $\Re(\epsilon'/\epsilon) = (15.0 \pm 2.7) \times 10^{-4}$ has been obtained. The result combined with the published 1997 sample is $\Re(\epsilon'/\epsilon) = (15.3 \pm 2.6) \times 10^{-4}$.

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