Journal Article

PreJuSER-55088

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Study of spectator tagging in the reaction np to pp Pi- with a deuteron beam

Dshemuchadse, S. ; Erhardt, A. ; Eyrich, W. ; Freiesleben, H. ; Gillitzer, A.FZJ* ; Jäkel, R. ; Karsch, L. ; Kilian, K.FZJ* ; Kuhlmann, E.FZJ* ; Möller, K. ; Morsch, H. P.FZJ* ; Naumann, L. ; Paul, N.FZJ* ; Pizzolotto, C. ; Ritman, J.FZJ* ; Roderburg, E.FZJ* ; Schönmeier, P. ; Schroeder, W. ; Schulte-Wissermann, M. ; Sun, G. Y. ; Teufel, A. ; Ucar, A.FZJ* ; Wagner, G. J. ; Wagner, M. ; Wintz, P.FZJ* ; Wüstner, P.FZJ* ; Zupranski, P.FZJ*

2006
Springer Berlin

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Please use a persistent id in citations: doi:10.1140/epja/i2006-10099-3

Abstract: The reaction dp --> pp pi(-) has been studied in a kinematically complete experiment at a single beam momentum pd = 1.85 GeV/c (T = 759 MeV). All four ejectiles have been detected in the large-acceptance time-of-flight spectrometer COSY-TOF. W analyzed the data along the lines of the spectator model as a means to isolate the quasi-free np --> pp pi(-) reaction. The spectator proton was identified by its momentum and flight direction thus yielding access to the associated Fermi motion of the bound neutron. A comparison is carried out with Monte Carlo simulations based on two different parameterizations of the deuteron wave function. Up to a Fermi momentum of roughly 150 MeV/c no significant deviations between experimental and simulated data of various observables were found from which we conclude that the deuteron can indeed be taken as a valid substitute for the neutron.

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)
2. Jülich-Aachen Research Alliance - Energy (JARA-ENERGY)

Research Program(s):

1. Physik der Hadronen und Kerne (P53)

Appears in the scientific report 2006

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