| Article | |
| Report number | CERN-PH-EP-2007-014 |
| Title | Determination of the relative decay rate $K_{S} \to \pi e \nu$ / $K_{L} \to \pi e \nu$ |
| Author(s) |
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 |
| Affiliation | (Cavendish Laboratory Universityof Cambridge Cambridge, UK) ; (CERN) ; (Joint Institute for Nuclear Research, Dubna, Russian Federation) ; (The Enrico fermi Institute, The University of Chicago, Chicago, Illinois, USA) ; (Department of Physics and Astronomy University of Edinburgh, JCMB King's Buildings, Mayfield Road, Edinburgh, UK) ; (Dipartimento di Fisica dell' Universita e Sezione dell'INFN di Ferrara, Ferrara, Italy) ; (Dipartimento di Fisica dell' Universita e Sezione dell' INFN di Firenze, Firenze, Italy) ; (Institut fur Physik Universitat Mainz, Mainz, Germany) ; (Department of Physics and Astronomy Northwestern University, Evanston, Illinois, USA) ; (Dipartimento di Fisica dell' Universita e Sezione dell' INFN di Perugia, Perugia, Italy) ; (Dipartimento di Fisica, Scuola Normale Superiore e Sezione dell' INFN di Pisa, Pisa, Italy) ; (DSM/DAPNIA-CEA Saclay Gif-sur-Yvette, France) ; (Fachbereich Physik Universitat Siegen, Siegen, Germany) ; (Dipartimento di Fisica Sperimentale dell' Universita e Sezione dell'INFN di Torino, Torino, Italy) ; (Soltan Institute for Nuclear Studies, Laboratory for High Energy Physics, Warsaw, Poland) ; (Osterreichische Akademie der Wissenschaften, Institut fur Hochenergiephysik, Wien, Austria) |
| Publication | 2007 |
| Imprint | 30 May 2007 |
| Number of pages | 9 |
| In: | Phys. Lett. B 653 (2007) 145-150 |
| DOI | 10.1016/j.physletb.2007.07.064 |
| Subject category | Particle Physics - Experiment |
| Accelerator/Facility, Experiment | CERN SPS ; NA48 |
| Abstract | 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 $BR(K_{S} \to\pi e \nu) = (7.05 \pm 0.18_{stat.} \pm 0.16_{syst.}) \times 10^{-4}$. |
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记录创建於2007-08-08，最後更新在2018-06-06
