Search for the decay $K_{S} \to \pi^{0} \gamma\gamma$

A search for the decay $K_{S} \to \pi^{0} \gamma\gamma$ has been made using the NA48 detector at the CERN SPS. Using data collected in 1999 during a 40-hour run with a high-intensity $K_{S}$ beam, an upper limit for the branching ratio $BR(K_{S} \to \pi^{0} \gamma\gamma, z \geq 0.2) < 3.3 \times...

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Detalles Bibliográficos
Autores principales: Lai, A., Marras, D., Batley, R., Bevan, A., Dosanjh, R.S., Gershon, T.J., Kalmus, G.E., Munday, D.J., Olaiya, E., Parker, Michael Andrew, White, T., Wotton, S.A., Barr, G., Bocquet, G., Ceccucci, A., Cuhadar-Donszelmann, T., Cundy, D., Doble, N., Falaleev, V., Gatignon, L., Gonidec, A., Gorini, B., Govi, G., Grafstrom, P., Kubischta, W., Lacourt, A., Lenti, M., Norton, A., Palestini, S., Panzer-Steindel, B., Tatishvili, G., Taureg, H., Velasco, M., Wahl, Heinrich, Cheshkov, C., Hristov, P., Kekelidze, V., Madigojine, D., Molokanova, N., Potrebenikov, Yu., Tkatchev, A., Zinchenko, A., Knowles, I., Lazzeroni, C., Martin, V., Sacco, R., Walker, A., Contalbrigo, M., Dalpiaz, P., Duclos, J., Frabetti, P.L., Gianoli, A., Martini, M., Masetti, L., Petrucci, F., Savrie, M., Bizzeti, A., Calvetti, M., Collazuol, G., Graziani, G., Iacopini, E., Becker, H.G., Eppard, M., Fox, H., Holtz, K., Kalter, A., Kleinknecht, K., Koch, U., Kopke, L., Lopes da Silva, P., Marouelli, P., Pellmann, I., Peters, A., Renk, B., Schmidt, S.A., Schonharting, V., Schue, Y., Wanke, R., Winhart, A., Wittgen, M., Chollet, J.C, Fayard, L., Iconomidou-Fayard, L., Ocariz, J., Unal, G., Wingerter, I., Anzivino, G., Cenci, P., Imbergamo, E., Lubrano, P., Mestvirishvili, A., Nappi, A., Pepe, M., Piccini, M., Carosi, R., Casali, R., Cerri, C., Cirilli, M., Costantini, F., Fantechi, R., Giudici, S., Mannelli, I., Pierazzini, G., Sozzi, M., Cheze, J.B., Cogan, J., De Beer, M., Debu, P., Formica, A., Granier de Cassagnac, R., Mazzucato, E., Peyaud, B., Turlay, R., Vallage, B., 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., Mikulec, I., 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(03)00104-7
http://cds.cern.ch/record/600560
Descripción
Sumario:A search for the decay $K_{S} \to \pi^{0} \gamma\gamma$ has been made using the NA48 detector at the CERN SPS. Using data collected in 1999 during a 40-hour run with a high-intensity $K_{S}$ beam, an upper limit for the branching ratio $BR(K_{S} \to \pi^{0} \gamma\gamma, z \geq 0.2) < 3.3 \times 10^{-7}$ has been obtained at 90% confidence level, where $z = m_{\gamma\gamma}^{2}/m_{K_{0}}^{2}$.

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