Measurement of the quadratic slope parameter in the KL → 3π0 decay Dalitz plot

A. Lai, D. Marras, L. Musa, A. Bevan, R. S. Dosanjh, T. J. Gershon, B. Hay, G. E. Kalmus, D. J. Munday, M. D. Needham, E. Olaiya, M. A. Parker, T. O. White, S. A. Wotton, G. Barr, H. Blümer, G. Bocquet, A. Ceccucci, D. Cundy, G. D'AgostiniN. Doble, V. Falaleev, L. Gatignon, A. Gonidec, G. Govi, P. Grafström, W. Kubischta, A. Lacourt, M. Lenti, S. Luitz, J. P. Matheys, A. Norton, S. Palestini, B. Panzer-Steindel, G. Tatishvili, H. Taureg, M. Velasco, H. Wahl, C. Cheshkov*, P. Hristov, V. Kekelidze, D. Madigojine, N. Molokanova, Y. Potrebenikov, A. Zinchenko, I. Knowles, C. Lazzeroni, V. Martin, H. Parsons, R. Sacco, A. Walker, M. Contalbrigo, P. Dalpiaz, J. Duclos, P. L. Frabetti, A. Gianoli, M. Martini, F. Petrucci, M. Savrié, A. Bizzeti, M. Calvetti, G. Collazuol, G. Graziani, E. Iacopini, H. G. Becker, M. Eppard, H. Fox, K. Holtz, A. Kalter, K. Kleinknecht, U. Koch, L. Köpke, I. Pellmann, A. Peters, B. Renk, S. A. Schmidt, V. Schönharting, Y. Schué, R. Wanke, A. Winhart, M. Wittgen, J. C. Chollet, S. Crépé, L. Fayard, L. Iconomidou-Fayard, J. Ocariz, G. Unal, I. Wingerter, G. Anzivino, P. Cenci, E. Imbergamo, P. Lubrano, A. Mestvirishvili, A. Nappi, M. Pepe, M. Piccini, R. Carosi, R. Casali, C. Cerri, M. Cirilli, F. Costantini, R. Fantechi, S. Giudici, B. Gorini, I. Mannelli, G. Pierazzini, M. Sozzi, J. B. Cheze, J. Cogan, M. de Beer, P. Debu, A. Formica, R. Granier de Cassagnac, E. Mazzucato, B. Peyaud, R. Turlay, B. Vallage, I. Augustin, M. Bender, M. Holder, M. Ziolkowski, R. Arcidiacono, C. Biino, 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

5 Scopus citations

Abstract

A value of (-6.1 ± 0.9stat ± 0.5syst) × 10-3 is obtained for the quadratic slope parameter h in the KL → 3π0 decay Dalitz plot at the NA48 experiment at the CERN SPS. The result is based on 14.7 × 106 fully reconstructed KL → 3π0 → 6γ decays. This is the most precise measurement of any of the Dalitz plot slope parameters in the charged and neutral kaon decays so far.

Original languageEnglish (US)
Pages (from-to)261-268
Number of pages8
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume515
Issue number3-4
DOIs
StatePublished - Aug 30 2001

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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