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Moskal, P. [Author]; Adam, H.-H. [Author]; Kolf, C. [Author]; Kowina, P. [Author]; Lister, T. [Author]; Oelert, W. [Author]; Piskor-Ignatowicz, C. [Author]; Przerwa, J. [Author]; Quentmeier, C. [Author]; Rozek, T. [Author]; Santo, R. [Author]; Schepers, G. [Author]; Budzanowski, A. [Author]; Sefzick, N. Y. [Author]; Siemaszko, M. [Author]; Smyrski, J. [Author]; Strzalkowski, A. [Author]; Taschner, A. [Author]; Winter, P. [Author]; Wolke, M. [Author]; Wüstner, P. [Author]; Zipper, W. [Author]; Czyzykiewicz, R. [Author]; Grzonka, D. [Author]; [...]

Upper limit for the cross-section of the overlapping scalar resonances F(0)(980) and A(0)(980) produced in proton proton collisions in the range of the reaction threshold

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  • Media type: E-Article
  • Title: Upper limit for the cross-section of the overlapping scalar resonances F(0)(980) and A(0)(980) produced in proton proton collisions in the range of the reaction threshold
  • Contributor: Moskal, P. [Author]; Adam, H.-H. [Author]; Kolf, C. [Author]; Kowina, P. [Author]; Lister, T. [Author]; Oelert, W. [Author]; Piskor-Ignatowicz, C. [Author]; Przerwa, J. [Author]; Quentmeier, C. [Author]; Rozek, T. [Author]; Santo, R. [Author]; Schepers, G. [Author]; Budzanowski, A. [Author]; Sefzick, N. Y. [Author]; Siemaszko, M. [Author]; Smyrski, J. [Author]; Strzalkowski, A. [Author]; Taschner, A. [Author]; Winter, P. [Author]; Wolke, M. [Author]; Wüstner, P. [Author]; Zipper, W. [Author]; Czyzykiewicz, R. [Author]; Grzonka, D. [Author]; [...]
  • imprint: IOP Publ., 2003
  • Published in: Journal of physics / G 29, 2235 - 2246 (2003). doi:10.1088/0954-3899/29/9/317
  • Language: English
  • DOI: https://doi.org/10.1088/0954-3899/29/9/317
  • ISSN: 0954-3899
  • Keywords: threshold ; K anti-K: molecule ; scalar meson: hadroproduction ; experimental results ; K: pair production ; Juelich COSY PS ; a0(980) ; mass mass spectrum: missing-mass ; p p: inelastic scattering ; p p --> 2p scalar meson ; p p --> 2p K+ K- ; channel cross section: upper limit ; f0(980)
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  • Description: Utilizing a missing mass technique we investigate the pp --> ppX reaction scanning beam energies in the range permitting to create a mass close to that of the f(0) (980) and a(0) (980) scalar resonances, but still below the K+ K- threshold where they decay dominantly into pi pi and pi eta mesons, respectively. Prior to the data analysis we introduce a notion of the close to threshold total cross-section for broad resonances. We estimated for the overlapping mesons a(0) and f(0) the total cross-section to be smaller than 430 nb at excess energy of Q = 5 MeV. The experiment has been performed at the Cooler Synchrotron (COSY) using the COSY-11 facility.
  • Access State: Open Access