Determination of the relative decay rate $K_{S} \to \pi e \nu$ / $K_{L} \to \pi e \nu$

The decay rate of $K_{S} \to \pi e \nu$ relative to the rate of $K_{L} \to \pi e \nu$ has been measured by the NA48 collaboration in a neutral Kaon beam originating from 400 GeV proton-Be interactions at the CERN SPS. The result is $0.993 \pm 0.026_{stat} \pm 0.022_{syst}$, compatible with 1 in agre...

Descripción completa

Detalles Bibliográficos
Autores principales: Batley, J R, Kalmus, George Ernest, Lazzeroni, C, Munday, D J, Patel, M, Slater, M W, Wotton, S A, Arcidiacono, R, Bocquet, G, Ceccucci, A, Cundy, Donald C, Doble, N, Falaleev, V, Gatignon, L, Gonidec, A, Grafström, P, Kubischta, Werner, Marchetto, F, Mikulec, I, Norton, A, Panzer-Steindel, B, Rubin, P, Wahl, H, Goudzovski, E, Khristov, P Z, Kekelidze, V, Litov, L, Madigozhin, D T, Molokanova, N, Potrebenikov, Yu, Stoynev, S, Zinchenko, A, Monnier, E, Swallow, E, Winston, R, Sacco, R, Walker, A, Baldini, W, Dalpiaz, P, Frabetti, P L, Gianoli, A, Martini, M, Petrucci, F, Scarpa, M, Savrié, M, Bizzeti, A, Calvetti, M, Collazuol, G, Graziani, G, Iacopini, E, Lenti, M, Martelli, F, Ruggiero, G, Veltri, M, Behler, M, Eppard, K, Eppard, M, Hirstius, A, Kleinknecht, K, Koch, U, Masetti, L, Marouelli, P, Moosbrugger, U, Morales-Morales, C, Peters, A, Wanke, R, Winhart, A, Dabrowski, A, Fonseca-Martin, T, Goy-Lopez, S, Velasco, M, Anzivino, Giuseppina, Cenci, P, Imbergamo, E, Lamanna, G, Lubrano, P, Michetti, A, Nappi, A, Pepé, M, Petrucci, M C, Piccini, M, Valdata, M, Cerri, C, Costantini, F, Fantechi, R, Fiorini, L, Giudici, S, Mannelli, I, Pierazzini, G, Sozzi, M, Cheshkov, C, Chèze, J B, De Beer, M, Debu, P, Gouge, G, Marel, Gérard, Mazzucato, E, Peyaud, B, Vallage, B, Holder, M, Maier, A, Ziolkowski, M, Biino, C, Cartiglia, N, Clemencic, M, Menichetti, E, Pastrone, N, Wislicki, W, Dibon, Heinz, Jeitler, Manfred, Markytan, Markytan, Neuhofer, G, Widhalm, L
Lenguaje:eng
Publicado: 2007
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/j.physletb.2007.07.064
http://cds.cern.ch/record/1050506
Descripción
Sumario:The decay rate of $K_{S} \to \pi e \nu$ relative to the rate of $K_{L} \to \pi e \nu$ has been measured by the NA48 collaboration in a neutral Kaon beam originating from 400 GeV proton-Be interactions at the CERN SPS. The result is $0.993 \pm 0.026_{stat} \pm 0.022_{syst}$, compatible with 1 in agreement with the Standard Model prediction at tree level. It implies $BR(K_{S} \to\pi e \nu) = (7.05 \pm 0.18_{stat.} \pm 0.16_{syst.}) \times 10^{-4}$.

Ejemplares similares