A new measurement of the branching ratio of $K_{s} \to \gamma\gamma$

The decay rate of $K_{S} \to \gamma\gamma$ has been measured with the NA48 detector at the CERN SPS. A total of 149 $K_{S} \to \gamma\gamma$ events have been observed. The branching ratio is determined to be $(2.58 \pm 0.36(stat) \pm 0.22(sys)) \times10^{-6}$.

Detalles Bibliográficos
Autores principales: Lai, A, Marras, D, Bevan, A, Dosanjh, R S, Gershon, T J, Hay, B, Kalmus, George Ernest, Lazzeroni, C, Munday, D J, Olaiya, E, Parker, M A, White, T O, Wotton, S A, Barr, Giles David, Bocquet, G, Ceccucci, Augusto, Çuhadar-Dönszelmann, T, Cundy, Donald C, D'Agostini, Giulio, Doble, Niels T, Falaleev, V P, Gatignon, L, Gonidec, A, Gorini, B, Govi, G, Grafström, P, Kubischta, Werner, Lacourt, A, Lenti, M, Mikulec, I, Norton, Alan Robert, Palestini, S, Panzer-Steindel, B, Tatishvili, G T, Taureg, Hans, Velasco, M, Wahl, H, Cheshkov, C, Gaponenko, A N, Khristov, P Z, Kekelidze, V D, Madigozhin, D T, Molokanova, N A, Potrebenikov, Yu K, Tkachev, A L, Zinchenko, A I, Knowles, I, Martin, V, 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, Martelli, F, Veltri, M, Becker, H G, Eppard, M, Fox, H, Holtz, K, Kalter, A, Kleinknecht, K, Koch, U, Köpke, L, Lopes da Silva, P, Marouelli, P, Pellmann, I A, Peters, A, Renk, B, Schmidt, S A, Schönharting, V, Schué, Yu, Wanke, R, Winhart, A, Wittgen, M, Chollet, J C, Fayard, Louis, Iconomidou-Fayard, L, Ocariz, J, Unal, G, Wingerter-Seez, I, Anzivino, Giuseppina, Cenci, P, Imbergamo, E, Lubrano, P, Mestvirishvili, A, Nappi, A, Pepé, M, Piccini, M, Bertanza, L, Carosi, R, Casali, R, Cerri, C, Cirilli, M, Costantini, F, Fantechi, R, Giudici, Sergio, Mannelli, I, Pierazzini, G M, Sozzi, M, Chèze, J B, Cogan, J, De Beer, M, Debu, P, Formica, A, Granier de Cassagnac, R, Mazzucato, E, Peyaud, B, Turlay, René, Vallage, B, Holder, M, Maier, A, Ziolkowski, M, Arcidiacono, R, Biino, C, Cartiglia, N, Guida, R, Marchetto, F, Menichetti, E, Pastrone, N, Nassalski, J P, Rondio, Ewa, Szleper, M, Wislicki, W, Wronka, S, Dibon, Heinz, Fischer, G, Jeitler, Manfred, Markytan, Manfred, Neuhofer, Günther, Pernicka, Manfred, Taurok, Anton, Widhalm, L
Lenguaje:eng
Publicado: 2000
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(00)01143-6
http://cds.cern.ch/record/465796
Descripción
Sumario:The decay rate of $K_{S} \to \gamma\gamma$ has been measured with the NA48 detector at the CERN SPS. A total of 149 $K_{S} \to \gamma\gamma$ events have been observed. The branching ratio is determined to be $(2.58 \pm 0.36(stat) \pm 0.22(sys)) \times10^{-6}$.

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