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arXiv · 1212.3131

Measurement of the branching ratio of the decay $Ξ^{0}\rightarrow Σ^{+} μ^{-} \barν_μ$

J. R. Batley·G. E. Kalmus·C. Lazzeroni·D. J. Munday·M. Patel·M. W. Slater·S. A. Wotton·R. Arcidiacono·G. Bocquet·A. Ceccucci·D. Cundy·N. Doble·V. Falaleev·L. Gatignon·A. Gonidec·P. Grafstrom·W. Kubischta·F. Marchetto·I. Mikulec·A. Norton·B. Panzer-Steindel·P. Rubin·H. Wahl·E. Goudzovski·P. Hristov·V. Kekelidze·V. Kozhuharov·L. Litov·D. Madigozhin·N. Molokanova·Yu. Potrebenikov·S. Stoynev·A. Zinchenko·E. Monnier·E. C. Swallow·R. Winston·R. Sacco·A. Walker·W. Baldini·P. Dalpiaz·P. L. Frabetti·A. Gianoli·M. Martini·F. Petrucci·M. Scarpa·M. Savrie·A. Bizzeti·M. Calvetti·G. Collazuol·E. Iacopini·M. Lenti·G. Ruggiero·M. Veltri·M. Behler·K. Eppard·M. Eppard·A. Hirstius·K. Kleinknecht·U. Koch·L. Masetti·P. Marouelli·U. Moosbrugger·C. Morales Morales·A. Peters·R. Wanke·A. Winhart·A. Dabrowski·T. Fonseca Martin·M. Velasco·G. Anzivino·P. Cenci·E. Imbergamo·G. Lamanna·P. Lubrano·A. Michetti·A. Nappi·M. Pepe·M. C. Petrucci·M. Piccini·M. Valdata·C. Cerri·F. Costantini·R. Fantechi·L. Fiorini·S. Giudici·I. Mannelli·G. Pierazzini·M. Sozzi·C. Cheshkov·J. B. Cheze·M. De Beer·P. Debu·G. Gouge·G. Marel·E. Mazzucato·B. Peyaud·B. Vallage·M. Holder·A. Maier·M. Ziolkowski
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Abstract

From the 2002 data taking with a neutral kaon beam extracted from the CERN-SPS, the NA48/1 experiment observed 97 $Ξ^{0}\rightarrow Σ^{+} μ^{-} \barν_μ$ candidates with a background contamination of $30.8 \pm 4.2$ events. From this sample, the BR($Ξ^{0}\rightarrow Σ^{+} μ^{-} \barν_μ$) is measured to be $(2.17 \pm 0.32_{\mathrm{stat}}\pm 0.17_{\mathrm{syst}})\times10^{-6}$.

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J. R. Batley, G. E. Kalmus, C. Lazzeroni, D. J. Munday, M. Patel, M. W. Slater, S. A. Wotton, R. Arcidiacono, G. Bocquet, A. Ceccucci, D. Cundy, N. Doble, V. Falaleev, L. Gatignon, A. Gonidec, P. Grafstrom, W. Kubischta, F. Marchetto, I. Mikulec, A. Norton, B. Panzer-Steindel, P. Rubin, H. Wahl, E. Goudzovski, P. Hristov, V. Kekelidze, V. Kozhuharov, L. Litov, D. Madigozhin, N. Molokanova, Yu. Potrebenikov, S. Stoynev, A. Zinchenko, E. Monnier, E. C. Swallow, R. Winston, R. Sacco, A. Walker, W. Baldini, P. Dalpiaz, P. L. Frabetti, A. Gianoli, M. Martini, F. Petrucci, M. Scarpa, M. Savrie, A. Bizzeti, M. Calvetti, G. Collazuol, E. Iacopini, M. Lenti, G. Ruggiero, M. Veltri, M. Behler, K. Eppard, M. Eppard, A. Hirstius, K. Kleinknecht, U. Koch, L. Masetti, P. Marouelli, U. Moosbrugger, C. Morales Morales, A. Peters, R. Wanke, A. Winhart, A. Dabrowski, T. Fonseca Martin, M. Velasco, G. Anzivino, P. Cenci, E. Imbergamo, G. Lamanna, P. Lubrano, A. Michetti, A. Nappi, M. Pepe, M. C. Petrucci, M. Piccini, M. Valdata, C. Cerri, F. Costantini, R. Fantechi, L. Fiorini, S. Giudici, I. Mannelli, G. Pierazzini, M. Sozzi, C. Cheshkov, J. B. Cheze, M. De Beer, P. Debu, G. Gouge, G. Marel, E. Mazzucato, B. Peyaud, B. Vallage, M. Holder, A. Maier, M. Ziolkowski. 2013-01-14. Measurement of the branching ratio of the decay $Ξ^{0}\rightarrow Σ^{+} μ^{-} \barν_μ$. https://doi.org/10.1016/j.physletb.2013.01.023

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