Journal Article

PreJuSER-33579

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Analysis of the reaction pp to pp eta near threshold

Nakayama, K.FZJ* ; Haidenbauer, J.FZJ* ; Hanhart, C.FZJ* ; Speth, J.FZJ*

2003
Inst. Woodbury, NY

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Please use a persistent id in citations: http://hdl.handle.net/2128/1684  doi:10.1103/PhysRevC.68.045201

Abstract: It is shown that most of the available data on the pp-->pp eta reaction, including the invariant mass distributions in the pp-->pp eta reaction recently measured at COSY, can be understood in terms of the partial-wave amplitudes involving final pp S and P states and the eta meson s wave. This finding, together with the fact that results within a meson-exchange model are especially sensitive to the details of the excitation mechanism of the S-11(1535) resonance, demonstrates the possibility of investigating the properties of this resonance in NN collisions. The spin correlation function C-xx is shown to disentangle the S- and P-wave contributions. It is also argued that spin correlations may be used to help constrain the contributions of the amplitudes corresponding to the final pp P-3(0) and P-3(2) states.

Keyword(s): p p: inelastic scattering ; polarization ; eta: hadroproduction ; threshold ; partial wave analysis ; mass spectrum: (2p) ; channel cross section: energy dependence ; eta: angular distribution ; p: angular dependence ; spin: correlation ; mass spectrum: (p eta) ; N(1535) ; numerical calculations ; interpretation of experiments: Juelich COSY PS ; p p --> 2p eta

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Institut 3 (Theoretische Kernphysik) (IKP-TH)

Research Program(s):

1. Physik der Hadronen (M01)

Appears in the scientific report 2003
Notes: This version is available at the following Publisher URL: http://prc.aps.org

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Database coverage:

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