A precision measurement of direct CP violation in the decay of neutral kaons into two pions

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. The 2001 running period was devoted to collecting additional data under varied conditions compared to earlier years (1997-9...

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Detalles Bibliográficos
Autores principales: Batley, J.R., Dosanjh, R.S., Gershon, T.J., Kalmus, G.E., Lazzeroni, C., Munday, D.J., Olaiya, E., Patel, M., Parker, Michael Andrew, White, T.O., Wotton, S.A., Arcidiacono, R., Barr, G., Bocquet, G., Ceccucci, A., Cuhadar-Donszelmann, T., Cundy, D., Doble, N., Falaleev, V., Gatignon, L., Gonidec, A., Gorini, B., Grafstrom, P., Kubischta, W., Mikulec, I., Norton, A., Palestini, S., Panzer-Steindel, B., Schinzel, D., Wahl, H., Cheshkov, C., Hristov, P., Kekelidze, V., Madigojine, D., Molokanova, N., Potrebenikov, Yu., Zinchenko, A., Rubin, P., Sacco, R., Walker, A., Bettoni, D., Calabrese, R., Dalpiaz, P., Duclos, J., Frabetti, P.L., Gianoli, A., Martini, M., Masetti, L., Petrucci, F., Savrie, M., Scarpa, M., Bizzeti, A., Calvetti, M., Collazuol, G., Iacopini, E., Lenti, M., Martelli, F., Ruggiero, G., Veltri, M., Coward, D.H., Eppard, M., Hirstius, A., Holtz, K., Kleinknecht, K., Koch, U., Kopke, L., Lopes da Silva, P., Marouelli, P., Mestvirishvili, I., Morales Morales, C., Pellmann, I., Peters, A., Renk, B., Schmidt, S.A., Schonharting, V., Wanke, R., Winhart, A., Chollet, J.C., Fayard, L., Graziani, G., Iconomidou-Fayard, L., Unal, G., Wingerter-Seez, I., Anzivino, G., Cenci, P., Imbergamo, E., Lamanna, G., Lubrano, P., Mestvirishvili, A., Nappi, A., Pepe, M., Piccini, M., Valdata-Nappi, M., Casali, R., Cerri, C., Cirilli, M., Costantini, F., Fantechi, R., Fiorini, L., Giudici, S., Mannelli, I., Pierazzini, G., Sozzi, M., Cheze, J.B., De Beer, M., Debu, P., Derue, F., Formica, A., Gouge, G., Marel, G., Mazzucato, E., Peyaud, B., Turlay, R., Vallage, B., Holder, M., Maier, A., Ziolkowski, M., Biino, C., Cartiglia, N., Clemencic, M., Marchetto, F., Menichetti, Ezio A., Pastrone, N., Nassalski, J., Rondio, E., Wislicki, W., Wronka, S., Dibon, H., Jeitler, M., Markytan, M., Neuhofer, G., Pernicka, M., Taurok, A., Widhalm, L.
Lenguaje:eng
Publicado: 2002
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(02)02476-0
http://cds.cern.ch/record/573738
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. The 2001 running period was devoted to collecting additional data under varied conditions compared to earlier years (1997-99). The new data yield the result: $\Re(\epsilon'/\epsilon)$=$(13.7\pm3.1) \times10^{-4}$. Combining this result with that published from the 1997 98 and 99 data, an overall value of $\Re(\epsilon'/\epsilon)$=$(14.7\pm2.2)\times10^{-4 }$ is obtained from the NA48 experiment.

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