A new measurement of direct CP violation in two pion decays of the neutral kaon

V. Fanti*, A. Lai, D. Marras, L. Musa, A. J. Bevan, T. J. Gershon, B. Hay, R. W. Moore, K. N. Moore, D. J. Munday, M. D. Needham, M. A. Parker, S. F. Takach, T. O. White, S. A. Wotton, G. Barr, H. Blümer, G. Bocquet, J. Bremer, A. CeccucciJ. Cogan, D. Cundy, N. Doble, W. Funk, L. Gatignon, A. Gianoli, A. Gonidec, G. Govi, P. Grafström, G. Kesseler, W. Kubischta, A. Lacourt, S. Luitz, J. P. Matheys, A. Norton, S. Palestini, B. Panzer-Steindel, B. Peyaud, D. Schinzel, H. Taureg, M. Velasco, O. Vossnack, H. Wahl, G. Wirrer, A. Gaponenko, V. Kekelidze, D. Madigojine, A. Mestvirishvili, Y. Potrebenikov, G. Tatishvili, A. Tkatchev, A. Zinchenko, L. Bertolotto, O. Boyle, I. G. Knowles, V. J. Martin, H. L C Parsons, K. J. Peach, C. Talamonti, M. Contalbrigo, P. Dalpiaz, J. Duclos, A. Formica, P. L. Frabetti, M. Martini, F. Petrucci, M. Savrié, A. Bizzeti, M. Calvetti, G. Collazuol, G. Graziani, E. Iacopini, M. Lenti, A. Michetti, H. G. Becker, P. Buchholz, D. Coward, C. Ebersberger, H. Fox, A. Kalter, K. Kleinknecht, U. Koch, L. Köpke, B. Renk, J. Scheidt, J. Schmidt, V. Schönharting, Y. Schué, R. Wilhelm, M. Wittgen, J. C. Chollet, S. Crépé, L. Fayard, L. Iconomidou-Fayard, J. Ocariz, G. Unal, D. Vattolo, I. Wingerter-Seez, G. Anzivino, F. Bordacchini, P. Cenci, P. Lubrano, A. Nappi, M. Pepe, M. Punturo, L. Bertanza, A. Bigi, P. Calafiura, R. Carosi, R. Casali, C. Cerri, M. Cirilli, F. Costantini, R. Fantechi, S. Giudici, B. Gorini, I. Mannelli, V. Marzulli, G. Pierazzini, F. Raffaelli, M. Sozzi, J. B. Cheze, M. de Beer, P. Debu, R. Granier de Cassagnac, P. Hristov, E. Mazzucato, S. Schanne, R. Turlay, B. Vallage, I. Augustin, M. Bender, M. Holder, M. Ziolkowski, R. Arcidiacono, C. Biino, R. Cester, F. Marchetto, E. Menichetti, N. Pastrone, J. Nassalski, E. Rondio, M. Szleper, W. Wislicki, S. Wronka, H. Dibon, G. Fischer, M. Jeitler, M. Markytan, I. Mikulec, G. Neuhofer, M. Pernicka, A. Taurok

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

294 Scopus citations

Abstract

The NA48 experiment at CERN has performed a new measurement of direct CP violation, based on data taken in 1997 by simultaneously collecting KL and KS decays into π0π0and π+π-. The result for the CP violating parameter Re(ε′/ε′) is (18.5 ± 4.5(stat) ± 5.8(syst)) × 10-4.

Original languageEnglish (US)
Pages (from-to)335-348
Number of pages14
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume465
Issue number1-4
DOIs
StatePublished - 1999

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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