1. Measurement of the slope parameter for theη→3π0decay in thepp→ppηreaction
- Author
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Hans Calén, V. Tikhomirov, J. Zabierowski, G. J. Wagner, R. J. M. Y. Ruber, Jozef Zlomanczuk, E. Jiganov, Magnus Wolke, T. Skorodko, A. A. Kuznetsov, P. Thörngren Engblom, Marek Jacewicz, H. Clement, Wolfgang Scobel, R. Meier, C. Pauly, Ulrich Wiedner, V. Tchernyshev, L. Demirörs, D. Bogoslawsky, H. Pettersson, Karin Schönning, F. Capellaro, S. Kullander, A. Turowiecki, A. Povtorejko, C. Ekström, W. Oelert, M. Bashkanov, Leif Gustafsson, A. Kupść, T. Johansson, V. Sopov, B. Höistad, Y. Petukhov, G. Ivanov, I. Koch, S. Keleta, Pawel Marciniewski, Akira Yamamoto, K. Fransson, B. Morosov, B. Shwartz, and J. Stepaniak
- Subjects
Physics ,Nuclear and High Energy Physics ,Particle physics ,Meson ,Dalitz plot ,Kinetic energy ,Measure (mathematics) ,Particle identification ,Nuclear physics ,Particle decay ,Distribution (mathematics) ,High Energy Physics::Experiment ,Nuclear Experiment ,Beam (structure) - Abstract
The CELSIUS-WASA setup is used to measure the 3{pi}{sup 0} decay of {eta} mesons produced in pp interactions with beam kinetic energies of 1.36 and 1.45 GeV. The efficiency-corrected Dalitz plot and density distributions for this decay are shown, together with a fit of the quadratic slope parameter {alpha} yielding {alpha}=-0.026{+-}0.010(stat){+-}0.010(syst). This value is compared to recent experimental results and theoretical predictions.
- Published
- 2007
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