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First observation and study of $K^\pm \to \pi^\pm \pi^0 e^+ e^-$ decay at the NA48/2 experiment

A sample of almost 2000 $K^\pm \to \pi^\pm \pi^0 e^+ e^-$ rare decays with a background contamination below 3% is observed for the first time by the NA48/2 experiment at CERN/SPS. The preliminary branching ratio in the full kinematic region is obtained to be $BR(K^\pm \to \pi^\pm \pi^0 e^+ e^-)$ = (...

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Detalles Bibliográficos
Autores principales: Misheva, M H, Anzivino, G, Arcidiacono, R, Balev, S, Batley, J R, Behler, M, Bi­fani, S, Biino, C, Bizzeti, A, Bloch-Devaux, B, Bocquet, G, Cabibbo, N, Calvetti, M, Cartiglia, N, Ceccucci, A, Cenci, P, Cerri, C, Cheshkov, C, Cheze, J B, Ciemencic, M, Collazuol, G, Costantini, F, Cotta Ramusino, A, Coward, D, Cundy, D, Dabrowski, A, Dalpiaz, P, Damiani, C, De Beer, M, Derre, J, Dibon, H, Dilella, L, Doble, N, Eppard, K, Falaleev, V, Fantechi, R, Fidecaro, M, Fiorini, L, Fiorini, M, Fonseca, T, Martin, M, Frabetti, P L, Gatignon, L, Gersabeck, E, Gianoli, A, Giudici, S, Gonidec, A, Goudzovski, E, Goy Lopez, S, Holder, M, Hris­, P, Iacopini, E, Imbergamo, E, Jeitler, M, Kalmus, G, Kekelidze, V, Kleinknecht, K, Kozhuharov, V, Kubis­, W, Lamanna, G, Lazzeroni, C, Lenti, M, Litov, L, Madigozhin, D, Maier, A, Mannelli, I, Marchetto, F, Mare, G, Markytan, M, Marouelli, P, Martini, M, Masetti, L, Mazzucato, E, Michetti, A, Mikulec, I, Molokanova, N, Monnier, E, Moosbrugger, U, Morales Morales, C, Munday, D J, Nappi, A, Neuhofer, G, Norton, A, Pa­, M, Pepe, M, Peters, A, Petrucci, F, Petrucci, M C, Peyaud, B, Piccini, M, Pierazzini, G, Polenkevich, I, Potrebenikov, Yu, Raggi, M, Renk, B, Rubin, P, Ruggiero, G, Savrie, M, Scarpa, M, Shieh, M, Slater, M W, Sozzi, M, Stoynev, S, Swallow, E, Szleper, M, Valdata-Nappi, M, Vallage, B, Velasco, M, Veltri, M, Venditti, S, Wache, M, Wahl, H, Walker, A, Wanke, R, Widhalm, L, Winhart, A, Winston, R, Wood, M D, Wotton, S A, Yushchenko, A, Zinchenko, M, Ziolkowski, M
Lenguaje:eng
Publicado: 2015
Materias:
Acceso en línea:http://cds.cern.ch/record/2278394