Journal Article

PreJuSER-59122

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Mechanism of Near-Threshold Production of the eta Meson

Czyzcykiewicz, R.FZJ* ; Moskal, P.FZJ* ; Adam, H.-H. ; Budzanowski, A. ; Czerwinski, E. ; Gil, D. ; Grzonka, D.FZJ* ; Hodana, M. ; Janusz, M.FZJ* ; Jarczyk, L.FZJ* ; Kamys, B. ; Khoukaz, A. ; Kilian, K.FZJ* ; Klaja, P.FZJ* ; Lorentz, B.FZJ* ; Oelert, W.FZJ* ; Piskor-Ignatowicz, B. ; Przerwa, J.FZJ* ; Rejdych, B. ; Ritman, J.FZJ* ; Sefzick, T.FZJ* ; Siemaszko, M. ; Smyrski, J. ; Täschner, A. ; Ulbrich, K. ; Winter, P. ; Wolke, M.FZJ* ; Wüstner, P.FZJ* ; Zipper, W.

2007
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/7750  doi:10.1103/PhysRevLett.98.122003

Abstract: 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.

Keyword(s): p p: inelastic scattering ; p: polarized beam ; eta: hadroproduction ; threshold ; analyzing power ; angular dependence ; model: production ; N(1535): effect ; pi: exchange ; experimental results ; Juelich COSY PS ; p p --> 2p eta

Note: Record converted from VDB: 12.11.2012

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Research Program(s):

1. Physik der Hadronen und Kerne (P53)

Appears in the scientific report 2007

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Database coverage:
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