Journal Article

PreJuSER-59037

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Hadronic 3He eta production near threshold

Adam, H.-H. ; Geck, I. ; Khoukaz, A. ; Lister, T. ; Santo, R. ; Steltenkamp, S. ; Täschner, A. ; Czerwinski, E. ; Czyzykiewicz, R. ; Janusz, M. ; Jarczyk, L. ; Kamys, B. ; Klaja, P. ; Moskal, P. ; Piskor-Ignatowicz, B. ; Przerwa, J. ; Smyrski, J. ; Grzonka, D.FZJ* ; Kilian, K.FZJ* ; Oelert, W.FZJ* ; Sefzick, T.FZJ* ; Winter, P.FZJ* ; Wolke, M.FZJ* ; Wüstner, P.FZJ* ; Budzanowski, A. ; Rozek, T. ; Siemaszko, M. ; Zipper, W.

2007
Inst. Woodbury, NY

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Please use a persistent id in citations: http://hdl.handle.net/2128/11105  doi:10.1103/PhysRevC.75.014004

Abstract: Measurements of eta meson production in proton-deuteron collisions have been performed using the COSY-11 facility at COSY (Julich). Results on total and differential cross sections for the pd -> He-3 eta reaction are presented at five excess energies between Q=5.0 and Q=40.6 MeV. The angular distributions show a transition from an almost isotropic emission close to threshold to a highly anisotropic distribution at higher excess energies. The total cross sections reveal a strong eta-He-3 final state interaction, corresponding to a scattering length of vertical bar(a)vertical bar=(4.2 +/- 0.5) fm and (a)=(0.4 +/- 1.9) fm.

Keyword(s): p deuteron: exclusive reaction ; eta: hadroproduction ; threshold ; channel cross section: energy dependence ; angular distribution ; final-state interaction: (eta light nucleus) ; scattering length ; magnetic spectrometer: experimental results ; Juelich COSY PS ; p deuteron --> helium-3 eta ; 1.58-1.66 GeV/c

Note: Record converted from VDB: 12.11.2012

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Research Program(s):

1. Kondensierte Materie (P54)

Appears in the scientific report 2007

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