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Search for CP violation in K0→3π0 decays

  • A. Lai
  • , D. Marras
  • , J. R. Batley
  • , R. S. Dosanjh
  • , T. J. Gershon
  • , G. E. Kalmus
  • , C. Lazzeroni
  • , D. J. Munday
  • , E. Olaiya
  • , M. A. Parker
  • , T. O. White
  • , S. A. Wotton
  • , R. Arcidiacono
  • , G. Barr
  • , G. Bocquet
  • , A. Ceccucci
  • , T. Cuhadar-Dönszelmann
  • , D. Cundy
  • , N. Doble
  • , V. Falaleev
  • L. Gatignon, A. Gonidec, B. Gorini, P. Grafström, W. Kubischta, A. Lacourt, I. Mikulec, A. Norton, B. Panzer-Steindel, G. Tatishvili, H. Wahl, C. Cheshkov, P. Hristov, V. Kekelidze, D. Madigojine, N. Molokanova, Yu Potrebenikov, A. Zinchenko, V. Martin, P. Rubin, R. Sacco, A. Walker, M. Contalbrigo, P. Dalpiaz, J. Duclos, M. Fiorini, P. L. Frabetti, A. Gianoli, M. Martini, F. Petrucci, M. Savrié, A. Bizzeti, M. Calvetti, G. Collazuol, G. Graziani, E. Iacopini, M. Lenti, F. Martelli, M. Veltri, K. Eppard, M. Eppard, A. Hirstius, K. Kleinknecht, U. Koch, L. Köpke, P. Lopes Da Silva, P. Marouelli, I. Mestvirishvili, I. Pellmann, A. Peters, S. A. Schmidt, V. Schönharting, Y. Schué, R. Wanke, A. Winhart, M. Wittgen, J. C. Chollet, L. Fayard, L. Iconomidou-Fayard, G. Unal, I. Wingerter-Seez, G. Anzivino, P. Cenci, E. Imbergamo, P. Lubrano, A. Mestvirishvili, A. Nappi, M. Pepe, M. Piccini, R. Casali, C. Cerri, M. Cirilli, F. Costantini, R. Fantechi, L. Fiorini, S. Giudici, I. Mannelli, G. Pierazzini, M. Sozzi, J. B. Cheze, M. De Beer, P. Debu, F. Derue, A. Formica, R. Granier De Cassagnac, G. Gouge, G. Marel, E. Mazzucato, B. Peyaud, R. Turlay, B. Vallage, M. Holder, A. Maier, M. Ziolkowski, C. Biino, N. Cartiglia, F. Marchetto, E. Menichetti, N. Pastrone, J. Nassalski, E. Rondio, M. Szleper, W. Wislicki, S. Wronka, H. Dibon, M. Jeitler, M. Markytan, G. Neuhofer, M. Pernicka, A. Taurok, L. Widhalm
  • Universitá di Cagliari
  • University of Cambridge
  • Carleton University
  • High Energy Accelerator Research Organization (KEK)
  • CCLRC Rutherford Appleton Laboratory
  • European Organization for Nuclear Research
  • Massachusetts Institute of Technology
  • University of Oxford
  • University of British Columbia
  • Ev-K2-CNR Committee
  • Scuola Normale Superiore di Pisa
  • Institut für Hochenergiephysik
  • Joint Institute for Nuclear Research, Dubna
  • Carnegie Mellon University
  • University of Ferrara
  • University of Edinburgh
  • Northwestern University
  • George Mason University
  • Queen Mary University of London
  • Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
  • University of Modena and Reggio Emilia
  • Institut Pierre Simon Laplace, CNRS and CEA
  • University of Urbino Carlo Bo
  • Johannes Gutenberg University
  • c/o DESY
  • Stanford Linear Accelerator Center
  • Université Paris-Sud
  • INFN Sezione di Perugia
  • University of Iowa
  • Universität Siegen
  • INFN Sezione di Torino
  • Soltan Institute for Nuclear Studies

Résultats de recherche: Contribution à un journalArticleRevue par des pairs

29 Citations (Scopus)

Résumé

Using data taken during the year 2000 with the NA48 detector at the CERN SPS, a search for the CP violating decay KS→3π0 has been performed. From a fit to the lifetime distribution of about 4.9 million reconstructed K0/K̄0→3π0 decays, the CP violating amplitude η000=A(KS→3π0)/ A(KL→3π0) has been found to be Re(η000)=-0.002±0.011±0.015 and Im(η000)=-0.003±0. 013±0.017. This corresponds to an upper limit on the branching fraction of Br(KS→3π0)<7.4×10-7 at 90% confidence level. The result is used to improve knowledge of Re(ε) and the CPT violating quantity Im(δ) via the Bell-Steinberger relation.

langue originaleAnglais
Pages (de - à)165-176
Nombre de pages12
journalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume610
Numéro de publication3-4
Les DOIs
étatPublié - 24 mars 2005

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