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Czyzcykiewicz, R. [Author]; Moskal, P. [Author]; Kamys, B. [Author]; Khoukaz, A. [Author]; Kilian, K. [Author]; Klaja, P. [Author]; Lorentz, B. [Author]; Oelert, W. [Author]; Piskor-Ignatowicz, B. [Author]; Przerwa, J. [Author]; Rejdych, B. [Author]; Ritman, J. [Author]; Adam, H.-H. [Author]; Sefzick, T. [Author]; Siemaszko, M. [Author]; Smyrski, J. [Author]; Täschner, A. [Author]; Ulbrich, K. [Author]; Winter, P. [Author]; Wolke, M. [Author]; Wüstner, P. [Author]; Zipper, W. [Author]; Budzanowski, A. [Author]; Czerwinski, E. [Author]; [...]

Mechanism of Near-Threshold Production of the eta Meson

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  • Media type: E-Article
  • Title: Mechanism of Near-Threshold Production of the eta Meson
  • Contributor: Czyzcykiewicz, R. [Author]; Moskal, P. [Author]; Kamys, B. [Author]; Khoukaz, A. [Author]; Kilian, K. [Author]; Klaja, P. [Author]; Lorentz, B. [Author]; Oelert, W. [Author]; Piskor-Ignatowicz, B. [Author]; Przerwa, J. [Author]; Rejdych, B. [Author]; Ritman, J. [Author]; Adam, H.-H. [Author]; Sefzick, T. [Author]; Siemaszko, M. [Author]; Smyrski, J. [Author]; Täschner, A. [Author]; Ulbrich, K. [Author]; Winter, P. [Author]; Wolke, M. [Author]; Wüstner, P. [Author]; Zipper, W. [Author]; Budzanowski, A. [Author]; Czerwinski, E. [Author]; [...]
  • imprint: APS, 2007
  • Published in: Physical review letters 98, 122003 (2007). doi:10.1103/PhysRevLett.98.122003
  • Language: English
  • DOI: https://doi.org/10.1103/PhysRevLett.98.122003
  • ISSN: 0031-9007
  • Keywords: model: production ; N(1535): effect ; p p: inelastic scattering ; p p --> 2p eta ; pi: exchange ; Juelich COSY PS ; eta: hadroproduction ; experimental results ; p: polarized beam ; analyzing power ; threshold ; angular dependence
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  • Description: Measurements of the analyzing power for the pp -> pp eta reaction have been performed at excess energies of Q=10 and 36 MeV. The determined analyzing power is essentially consistent with zero, implying dominance of the s wave at both excess energies. The angular dependence of the analyzing power, combined with the isospin dependence of the total cross section for the eta meson production in nucleon-nucleon collisions, reveal that the excitation of the nucleon to the S-11(1535) resonance is predominantly due to the exchange of the pi meson between the colliding nucleons.
  • Access State: Open Access