Hauptseite > Search for direct CP-violation in $K^{\pm}\to \pi^{\pm}\pi^{0}\pi^{0}$ decays |
Article | |
Report number | hep-ex/0606007 |
Title | Search for direct CP-violation in $K^{\pm}\to \pi^{\pm}\pi^{0}\pi^{0}$ decays |
Related title | CP VIOLATION CHARGE PARITY |
Author(s) |
Batley, J.R. (Cambridge U.) ; Culling, A.J. (Cambridge U.) ; Kalmus, G. (Cambridge U.) ; Lazzeroni, C. (Cambridge U.) ; Munday, D.J. (Cambridge U.) ; Slater, M.W. (Cambridge U.) ; Arcidiacono, R. (CERN) ; Bocquet, G. (CERN) ; Cabibbo, N. (CERN) ; Ceccucci, A. (CERN) ; Cundy, D. (CERN) ; Falaleev, V. (CERN) ; Fidecaro, M. (CERN) ; Gatignon, L. (CERN) ; Gonidec, A. (CERN) ; Kubischta, W. (CERN) ; Norton, A. (CERN) ; Maier, A. (CERN) ; Patel, M. (CERN) ; Peters, A. (CERN) ; Balev, S. (Dubna, JINR) ; Frabetti, P.L. (Dubna, JINR) ; Goudzovski, E. (Dubna, JINR) ; Hristov, P. (Dubna, JINR) ; Kekelidze, V. (Dubna, JINR) ; Kozhuharov, V. (Dubna, JINR) ; Litov, L. (Dubna, JINR) ; Madigozhin, D. (Dubna, JINR) ; Marinova, E. (Dubna, JINR) ; Molokanova, N. (Dubna, JINR) ; Polenkevich, I. (Dubna, JINR) ; Potrebenikov, Yu. (Dubna, JINR) ; Stoynev, S. (Dubna, JINR) ; Zinchenko, A. (Dubna, JINR) ; Monnier, E. (Chicago U., EFI) ; Swallow, E. (Chicago U., EFI) ; Winston, R. (Chicago U., EFI) ; Rubin, P. (Edinburgh U., Inst. Astron.) ; Walker, A. (Edinburgh U., Inst. Astron.) ; Baldini, W. (Ferrara U. ; INFN, Ferrara) ; Cotta Ramusino, A. (Ferrara U. ; INFN, Ferrara) ; Dalpiaz, P. (Ferrara U. ; INFN, Ferrara) ; Damiani, C. (Ferrara U. ; INFN, Ferrara) ; Fiorini, M. (Ferrara U. ; INFN, Ferrara) ; Gianoli, A. (Ferrara U. ; INFN, Ferrara) ; Martini, M. (Ferrara U. ; INFN, Ferrara) ; Petrucci, F. (Ferrara U. ; INFN, Ferrara) ; Savrie, M. (Ferrara U. ; INFN, Ferrara) ; Scarpa, M. (Ferrara U. ; INFN, Ferrara) ; Wahl, H. (Ferrara U. ; INFN, Ferrara) ; Bizzeti, A. (Florence U. ; INFN, Florence) ; Calvetti, M. (Florence U. ; INFN, Florence) ; Celeghini, E. (Florence U. ; INFN, Florence) ; Iacopini, E. (Florence U. ; INFN, Florence) ; Lenti, M. (Florence U. ; INFN, Florence) ; Martelli, F. (Florence U. ; INFN, Florence) ; Ruggiero, G. (Florence U. ; INFN, Florence) ; Veltri, M. (Florence U. ; INFN, Florence) ; Behler, M. (Mainz U., Inst. Kernphys.) ; Eppard, K. (Mainz U., Inst. Kernphys.) ; Kleinknecht, K. (Mainz U., Inst. Kernphys.) ; Marouelli, P. (Mainz U., Inst. Kernphys.) ; Masetti, L. (Mainz U., Inst. Kernphys.) ; Moosbrugger, U. (Mainz U., Inst. Kernphys.) ; Morales Morales, C. (Mainz U., Inst. Kernphys.) ; Renk, B. (Mainz U., Inst. Kernphys.) ; Wache, M. (Mainz U., Inst. Kernphys.) ; Wanke, R. (Mainz U., Inst. Kernphys.) ; Winhart, A. (Mainz U., Inst. Kernphys.) ; Coward, D.H. (Northwestern U.) ; Dabrowski, A. (Northwestern U.) ; Fonseca Martin, T. (Northwestern U.) ; Shieh, M. (Northwestern U.) ; Szleper, M. (Northwestern U.) ; Velasco, M. (Northwestern U.) ; Wood, M.D. (Northwestern U.) ; Anzivino, G. (Perugia U. ; INFN, Perugia) ; Cenci, P. (Perugia U. ; INFN, Perugia) ; Imbergamo, E. (Perugia U. ; INFN, Perugia) ; Nappi, A. (Perugia U. ; INFN, Perugia) ; Pepe, M. (Perugia U. ; INFN, Perugia) ; Petrucci, M.C. (Perugia U. ; INFN, Perugia) ; Piccini, M. (Perugia U. ; INFN, Perugia) ; Raggi, M. (Perugia U. ; INFN, Perugia) ; Valdata-Nappi, M. (Perugia U. ; INFN, Perugia) ; Cerri, C. (Pisa U. ; Pisa, Scuola Normale Superiore ; INFN, Pisa) ; Collazuol, G. (Pisa U. ; Pisa, Scuola Normale Superiore ; INFN, Pisa) ; Costantini, F. (Pisa U. ; Pisa, Scuola Normale Superiore ; INFN, Pisa) ; DiLella, L. (Pisa U. ; Pisa, Scuola Normale Superiore ; INFN, Pisa) ; Doble, N. (Pisa U. ; Pisa, Scuola Normale Superiore ; INFN, Pisa) ; Fantechi, R. (Pisa U. ; Pisa, Scuola Normale Superiore ; INFN, Pisa) ; Fiorini, L. (Pisa U. ; Pisa, Scuola Normale Superiore ; INFN, Pisa) ; Giudici, S. (Pisa U. ; Pisa, Scuola Normale Superiore ; INFN, Pisa) ; Lamanna, G. (Pisa U. ; Pisa, Scuola Normale Superiore ; INFN, Pisa) ; Mannelli, I. (Pisa U. ; Pisa, Scuola Normale Superiore ; INFN, Pisa) ; Michetti, A. (Pisa U. ; Pisa, Scuola Normale Superiore ; INFN, Pisa) ; Pierazzini, G. (Pisa U. ; Pisa, Scuola Normale Superiore ; INFN, Pisa) ; Sozzi, M. (Pisa U. ; Pisa, Scuola Normale Superiore ; INFN, Pisa) ; Bloch-Devaux, Brigitte (DAPNIA, Saclay) ; Cheshkov, C. (DAPNIA, Saclay) ; Cheze, J.B. (DAPNIA, Saclay) ; De Beer, M. (DAPNIA, Saclay) ; Derre, J. (DAPNIA, Saclay) ; Marel, G. (DAPNIA, Saclay) ; Mazzucato, E. (DAPNIA, Saclay) ; Peyaud, B. (DAPNIA, Saclay) ; Vallage, B. (DAPNIA, Saclay) ; Holder, M. (Siegen U.) ; Ziolkowski, M. (Siegen U.) ; Bifani, S. (Turin U. ; INFN, Turin) ; Biino, C. (Turin U. ; INFN, Turin) ; Cartiglia, N. (Turin U. ; INFN, Turin) ; Clemencic, M. (Turin U. ; INFN, Turin) ; Goy Lopez, S. (Turin U. ; INFN, Turin) ; Dibon, H. (Vienna, OAW) ; Jeitler, M. (Vienna, OAW) ; Markytan, M. (Vienna, OAW) ; Mikulec, I. (Vienna, OAW) ; Neuhofer, G. (Vienna, OAW) ; Widhalm, L. (Vienna, OAW) |
Publication | 2006 |
Imprint | 2 Jun 2006 |
Number of pages | 14 |
In: | Phys. Lett. B 638 (2006) pp.22-29 |
DOI | 10.1016/j.physletb.2006.05.008 10.1016/j.physletb.2006.08.001 |
Subject category | Particle Physics - Experiment |
Accelerator/Facility, Experiment | CERN SPS ; NA48/2 |
Abstract | A search for direct CP-violation in K+- --> pi+-pi0pi0 decays based on 47.14 million events has been performed by the NA48/2 experiment at the CERN SPS. The asymmetry in the Dalitz plot linear slopes A_g=(g^+ - g^-)/(g^+ + g^-) is measured to be A_g=(1.8 +- 2.6).10^{-4}. The design of the experiment and the method of analysis provide good control of instrumental charge asymmetries in this measurement. The precision of the result is limited by statistics and is almost one order of magnitude better than that of previous measurements by other experiments. |
Copyright/License | Elsevier B.V. |