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Measurement of the $K_{L} \to e^{+}e^{-}e^{+} e^{-}$ Decay Rate (2005) |
- Lai, A,
- Bearden, I G,
- Marras, D,
- Batley, J Richard,
- Dosanjh, R S,
- Gershon, T J,
- Kalmus, George Ernest,
- Lazzeroni, C,
- Munday, D J,
- Olaiya, E,
- Parker, M A,
- White, T O,
- Wotton, S A,
- Arcidiacono, R,
- Barr, G,
- Bocquet, G,
- Ceccucci, Augusto,
- Çuhadar-Dönszelmann, T,
- Cundy, Donald C,
- Doble, Niels T,
- Falaleev, V P,
- Gatignon, L,
- Gonidec, A,
- Gorini, B,
- Grafström, P,
- Kubischta, Werner,
- Lacourt, A,
- Norton, A,
- Panzer-Steindel, B,
- Tatishvili, G T,
- Wahl, H,
- Cheshkov, C,
- Khristov, P Z,
- Kekelidze, V D,
- Madigozhin, D T,
- Molokanova, N A,
- Potrebenikov, Yu K,
- Zinchenko, A I,
- Martin, V,
- Rubin, P,
- Sacco, R,
- Walker, A,
- Contalbrigo, M,
- Dalpiaz, Pietro,
- Duclos, J,
- Frabetti, P L,
- Gianoli, A,
- Martini, M,
- Petrucci, F,
- Savrié, M,
- Bizzeti, A,
- Calvetti, M,
- Collazuol, G,
- Graziani, G,
- Iacopini, E,
- Lenti, M,
- Martelli, F,
- Veltri, M,
- Eppard, M,
- Hirstius, A,
- Holtz, K,
- Kleinknecht, K,
- Koch, U,
- Köpke, L,
- Marouelli, P,
- Mestvirishvili, I,
- Pellmann, I A,
- Peters, A,
- Schmidt, S A,
- Schönharting, V,
- Schué, Yu,
- Wanke, R,
- Winhart, A,
- Wittgen, M,
- Chollet, J C,
- Fayard, Louis,
- Iconomidou-Fayard, L,
- Unal, G,
- Wingerter-Seez, I,
- Anzivino, Giuseppina,
- Cenci, P,
- Imbergamo, E,
- Lubrano, P,
- Mestvirishvili, A,
- Nappi, A,
- Pepé, M,
- Piccini, M,
- Casali, R,
- Cerri, C,
- Cirilli, M,
- Costantini, F,
- Fantechi, R,
- Fiorini, Luca,
- Giudici, Sergio,
- Mannelli, I,
- Pierazzini, G M,
- Sozzi, M,
- Chèze, J B,
- De Beer, M,
- Debu, P,
- Derue, F,
- Formica, A,
- Gouge, G,
- Marel, Gérard,
- Mazzucato, E,
- Peyaud, B,
- Turlay, René,
- Vallage, B,
- Holder, M,
- Maier, A,
- Ziolkowski, M,
- Biino, C,
- Cartiglia, N,
- Marchetto, F,
- Menichetti, E,
- Pastrone, N,
- Nassalski, J P,
- Rondio, Ewa,
- Szleper, M,
- Wislicki, W,
- Wronka, S,
- Dibon, Heinz,
- Jeitler, Manfred,
- Markytan, Manfred,
- Mikulec, I,
- Neuhofer, Günther,
- Pernicka, Manfred,
- Taurok, Anton,
- Widhalm, L,
- Beavis, D,
- Besliu, C,
- Budick, B,
- Bøggild, H,
- Chasman, C,
- Christensen, C H,
- Christiansen, P,
- Cibor, J,
- Debbe, R,
- Enger, E,
- Gaardhøje, J J,
- Germinario, M,
- Hagel, K,
- Ito, H,
- Jipa, A,
- Jundt, F,
- Jordre, J I,
- Jorgensen, C E,
- Karabowicz, R,
- Kim, E J,
- Kozik, T,
- Larsen, T M,
- Lee, J H,
- Lee, Y K,
- Lindal, S,
- Lystad, R,
- Løvhøiden, G,
- Majka, Z,
- Makeev, A,
- Mikelsen, M,
- Murray, M,
- Natowitz, J B,
- Neumann, B,
- Nielsen, B S,
- Ouerdane, D,
- Planeta, R,
- Rami, F,
- Ristea, C,
- Ristea, O,
- Röhrich, D,
- Samset, B H,
- Sandberg, D,
- Sanders, S J,
- Scheetz, R A,
- Staszel, P,
- Tveter, T S,
- Videbaek, F,
- Wada, R,
- Yin, Z,
- Zgura, I S
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Abstract |
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The decay rate of the long-lived neutral K meson into the e^+ e^- e^+ e^- final state has been measured with the NA48 detector at the CERN SPS. Using data collected in 1998 and 1999, a total of 200 events has been observed with negligible background. This observation corresponds to a branching ratio of Br(K_L -> e^+ e^- e^+ e^-) = (3.30 + - 0.24_stat + - 0.23_sys + - 0.10_norm) x 10^-8. |
Publication details |
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