Journal Article

PreJuSER-60382

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Study of the production mechanism of the eta meson by means of analysing power measurements

Czyzykiewicz, R.FZJ* ; Moskal, P.FZJ* ; Adam, H.-H. ; Budzanowski, A. ; Czerwinski, E.FZJ* ; Gil, D. ; Grzonka, D.FZJ* ; Janusz, M.FZJ* ; Jarczyk, L. ; Kamys, B. ; Khoukaz, A. ; Klaja, P.FZJ* ; Majewski, J.FZJ* ; Oelert, W.FZJ* ; Piskor-Ignatowicz, C.FZJ* ; Przerwa, J.FZJ* ; Ritman, J.FZJ* ; Rohdjess, H. ; Rozek, T.FZJ* ; Sefzick, T.FZJ* ; Siemasko, M. ; Smyrski, J. ; Täschner, A. ; Ulbrich, K. ; Winter, P.FZJ* ; Wolke, M.FZJ* ; Wüstner, P.FZJ* ; Zipper, W.

2007
World Scientific Publ. Singapur

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Please use a persistent id in citations: http://hdl.handle.net/2128/2546  doi:10.1142/S0217751X07035744

Abstract: Information about the production mechanism of the eta meson in proton-proton collisions can be inferred by confronting the experimental studies on the analysing power for the (p) over right arrowp -> pp eta reaction with the theoretical predictions of this observable. The determined analysing powers for Q=10 MeV and Q=36 MeV are consistent with zero. Results show that the predictions of pure pseudoscalar meson exchange model fairly describe the experimental data, while the predictions of pure vector meson exchange dominance model disagree with the data at the level of 4.3 sigma.

Keyword(s): J ; eta meson (auto) ; close-to-threshold production (auto) ; analysing power (auto)

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Experimentelle Hadronstruktur (IKP-1)

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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