Journal Article

PreJuSER-55380

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Study of the 3He - eta system in d-p collisions at COSY-11

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

2006
Inst. of Physics, Slovak Acad. of Sciences Bratislava

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Abstract: We present preliminary results from dp -> He-3 X, (X = pi(0),eta) measurements near the eta production threshold. The data were taken during a slow ramping of the COSY internal deuteron beam scattered on a proton target. The He-3 ejectiles were registered with the COSY-11 detection setup. The ongoing data analysis should deliver high precision data for the dp -> He-3 eta total and differential cross sections for the excess energies in the range from threshold up to 9 MeV. The preliminary excitation function for the reaction dp -> 3 He pi(0) does not show any structure which Could originate from the decay of He-3 - eta bound state. We present also a threshold excitation curve for the dp - He-3 X channel. Contrary to corresponding results from SATURNE we see no cusp in the vicinity of the eta threshold.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Institut 1 (Experimentelle Kernphysik I) (IKP-E-I)

Research Program(s):

1. Physik der Hadronen und Kerne (P53)

Appears in the scientific report 2006

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