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The decay asymmetries of the weak radiative hyperon decays Xi(0) -> Lambda gamma and Xi(0) -> Sigma(0)gamma have been measured with high precision using data of the NA48/1 experiment at CERN. From about 52 000 Xi(0) -> Lambda gamma and 15 000 Xi(0) -> Sigma(0)gamma decays, we obtain for the decay asymmetries alpha(Xi 0 -> Lambda gamma) = -0.704 +/- 0.019(stat) +/- 0.064(syst) and alpha(Xi 0 -> Sigma 0 gamma) = -0.729 +/- 0.030(stat) +/- 0.076(syst), respectively. These results are in good agreement with previous experiments, but more precise. (C) 2010 Elsevier B.V. All rights reserved.

New precise measurements of the Xi(0) -> Lambda gamma and Xi(0) -> Sigma(0)gamma decay asymmetries NA48/1 Collaboration

LAMANNA, GIANLUCA;COSTANTINI, FLAVIO;GIUDICI, SERGIO;SOZZI, MARCO STANISLAO;
2010-01-01

Abstract

The decay asymmetries of the weak radiative hyperon decays Xi(0) -> Lambda gamma and Xi(0) -> Sigma(0)gamma have been measured with high precision using data of the NA48/1 experiment at CERN. From about 52 000 Xi(0) -> Lambda gamma and 15 000 Xi(0) -> Sigma(0)gamma decays, we obtain for the decay asymmetries alpha(Xi 0 -> Lambda gamma) = -0.704 +/- 0.019(stat) +/- 0.064(syst) and alpha(Xi 0 -> Sigma 0 gamma) = -0.729 +/- 0.030(stat) +/- 0.076(syst), respectively. These results are in good agreement with previous experiments, but more precise. (C) 2010 Elsevier B.V. All rights reserved.
2010
Batley, Jr; Kalmus, Ge; Lazzeroni, C; Munday, Dj; Patel, M; Slater, Mw; Wotton, Sa; Arcidiacono, R; Bocquet, G; Ceccucci, A; Cundy, D; Doble, N; Falaleev, V; Gatignon, L; Gonidec, A; Grafstrom, P; Kubischta, W; Mikulec, I; Norton, A; Panzer Steindel, B; Rubin, P; Wahl, H; Goudzovski, E; Hristov, P; Kekelidze, V; Litov, L; Madigozhin, D; Molokanova, N; Potrebenikov, Y; Stoynev, S; Zinchenko, A; Monnier, E; Swallow, E; Winston, R; Sacco, R; Walker, A; Baldini, W; Gianoli, A; Dalpiaz, P; Frabetti, Pl; Martini, M; Petrucci, F; Savrie, M; Scarpa, M; Calvetti, M; Collazuol, G; Iacopini, E; Ruggiero, G; Bizzeti, A; Lenti, M; Veltri, M; Behler, M; Eppard, K; Eppard, M; Hirstius, A; Kleinknecht, K; Koch, U; Marouelli, P; Masetti, L; Moosbrugger, U; Morales, Cm; Peters, A; Wanke, R; Winhart, A; Dabrowski, A; Martin, Tf; Velasco, M; Cenci, P; Lubrano, P; Pepe, M; Anzivino, G; Imbergamo, E; Lamanna, Gianluca; Michetti, A; Nappi, A; Petrucci, Mc; Piccini, M; Valdata, M; Cerri, C; Fantechi, R; Costantini, Flavio; Fiorini, L; Giudici, Sergio; Pierazzini, G; Sozzi, MARCO STANISLAO; Mannelli, I; Cheshkov, C; Cheze, Jb; De Beer, M; Debu, P; Gouge, G; Marel, G; Mazzucato, E; Peyaud, B; Vallage, B; Holder, M; Maier, A; Ziolkowski, M; Biino, C; Cartiglia, N; Marchetto, F; Pastrone, N; Clemencic, M; Lopez, Sg; Menichetti, E; Wislicki, W; Dibon, H; Jeitler, M; Markytan, M; Neuhofer, G; Widhalm, L.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/195213
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