/ Experiment-HEP hep-ex/0702045

Measurement of the Dalitz plot slopes of the K+- to pi+- pi+ pi- decay

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.) ; Walker, A. (Edinburgh U.) ; Baldini, W. (INFN, Ferrara) ; Ramusino, A.Cotta (INFN, Ferrara) ; Dalpiaz, P. (INFN, Ferrara) ; Damiani, C. (INFN, Ferrara) ; Fiorini, M. (INFN, Ferrara) ; Gianoli, A. (INFN, Ferrara) ; Martini, M. (INFN, Ferrara) ; Petrucci, F. (INFN, Ferrara) ; Savrie, M. (INFN, Ferrara) ; Scarpa, M. (INFN, Ferrara) ; Bizzeti, A. (INFN, Florence) ; Calvetti, M. (INFN, Florence) ; Celeghini, E. (INFN, Florence) ; Iacopini, E. (INFN, Florence) ; Lenti, M. (INFN, Florence) ; Martelli, F. (INFN, Florence) ; Ruggiero, G. (INFN, Florence) ; Veltri, M. (INFN, Florence) ; Behler, M. (Mainz U., Inst. Phys.) ; Eppard, K. (Mainz U., Inst. Phys.) ; Kleinknecht, K. (Mainz U., Inst. Phys.) ; Marouelli, P. (Mainz U., Inst. Phys.) ; Masetti, L. (Mainz U., Inst. Phys.) ; Moosbrugger, U. (Mainz U., Inst. Phys.) ; Morales, C.Morales (Mainz U., Inst. Phys.) ; Renk, B. (Mainz U., Inst. Phys.) ; Wache, M. (Mainz U., Inst. Phys.) ; Wanke, R. (Mainz U., Inst. Phys.) ; Winhart, A. (Mainz U., Inst. Phys.) ; 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, A.G. (INFN, Perugia) ; Cenci, P. (INFN, Perugia) ; Imbergamo, E. (INFN, Perugia) ; Nappi, A. (INFN, Perugia) ; Pepe, M. (INFN, Perugia) ; Petrucci, M.C. (INFN, Perugia) ; Piccini, M. (INFN, Perugia) ; Raggi, M. (INFN, Perugia) ; Anzivino, G. (Pisa, Scuola Normale Superiore) ; Cerri, C. (Pisa, Scuola Normale Superiore) ; Collazuol, G. (Pisa, Scuola Normale Superiore) ; Costantini, F. (Pisa, Scuola Normale Superiore) ; DiLella, L. (Pisa, Scuola Normale Superiore) ; Doble, N. (Pisa, Scuola Normale Superiore) ; Fantechi, R. (Pisa, Scuola Normale Superiore) ; Fiorini, L. (Pisa, Scuola Normale Superiore) ; Giudici, S. (Pisa, Scuola Normale Superiore) ; Lamanna, G. (Pisa, Scuola Normale Superiore) ; Mannelli, I. (Pisa, Scuola Normale Superiore) ; Michetti, A. (Pisa, Scuola Normale Superiore) ; Pierazzini, G. (Pisa, Scuola Normale Superiore) ; Sozzi, M. (Pisa, Scuola Normale Superiore) ; Bloch-Devaux, Brigitte (DSM, DAPNIA, Saclay) ; Cheshkov, C. (DSM, DAPNIA, Saclay) ; Cheze, J.B. (DSM, DAPNIA, Saclay) ; De Beer, M. (DSM, DAPNIA, Saclay) ; Derre, J. (DSM, DAPNIA, Saclay) ; Marel, G. (DSM, DAPNIA, Saclay) ; Mazzucato, E. (DSM, DAPNIA, Saclay) ; Peyaud, B. (DSM, DAPNIA, Saclay) ; Vallage, B. (DSM, DAPNIA, Saclay) ; Holder, M. (Siegen U.) ; Ziolkowski, M. (Siegen U.) ; Bifani, S. (INFN, Turin) ; Biino, C. (INFN, Turin) ; Cartiglia, N. (INFN, Turin) ; Clemencic, M. (INFN, Turin) ; Lopez, S.Goy (INFN, Turin) ; Marchetto, F. (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)

Published in: Phys.Lett.
Year: 2007
Vol.: B649
Page No: 349-358
Pages: 14

Abstract: The distribution of the $K^\pm\to\pi^\pm\pi^+\pi^-$ decays in the Dalitz plot has been measured by the NA48/2 experiment at the CERN SPS with a sample of $4.71\times 10^8$ fully reconstructed events. With the standard Particle Data Group parameterization the following values of the slope parameters were obtained: $g=(-21.134\pm0.017)\%$, $h=(1.848\pm0.040)\%$, $k=(-0.463\pm0.014)\%$. The quality and statistical accuracy of the data have allowed an improvement in precision by more than an order of magnitude, and are such as to warrant a more elaborate theoretical treatment, including pion-pion rescattering, which is in preparation.

Web-Page: http://pdglive.lbl.gov/REFERENCE_info1.brl?slacrpp=PHLTA,B649,349

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